PHP Malware Analysis

dome2.html

md5: f52102805418e1176c74b7c9937e5297

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Deobfuscated PHP code

<META NAME="ROBOTS" CONTENT="INDEX, NOFOLLOW">
  <!DOCTYPE html><html>
  <link rel="SHORTCUT ICON" href="https://athena.edu.vn/content/uploads/2021/03/hacker-jacket-with-hood-with-laptop-sits-table_164357-56.jpg">
  <head>
  <script>
        document.onkeydown = function(e) {
                if (e.ctrlKey && (e.keyCode === 67 || e.keyCode === 86 || e.keyCode === 85 || e.keyCode === 117)) {//Alt+c, Alt+v will also be disabled sadly.
                    alert('TUOI LON BU SOUCRE WEB TAO HAHA NOOB ');
                }
                return false;
        };
        </script>
  <title>✪-> Hacked By LE DINH NHAT <-✪</title>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <style type="text/css">*{margin:0;padding:0;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;-ms-box-sizing:border-box;-o-box-sizing:border-box;box-sizing:border-box}body,html{margin:0;padding:0;font:16px/1.4 Lato,sans-serif;color:#fefeff;-webkit-font-smoothing:antialiased;font-smoothing:antialiased;font-family:Comic Sans MS}body{background:#080510;-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}h1{font:2.75em Cinzel,serif;font-weight:400;letter-spacing:.35em;text-shadow:0 0 25px rgba(254,254,255,.85)}h2{font:1.45em Cinzel,serif;font-weight:400;letter-spacing:.5em;text-shadow:0 0 25px rgba(254,254,255,.85);text-transform:lowercase}[class^=letter]{-webkit-transition:opacity 3s ease;-moz-transition:opacity 3s ease;transition:opacity 3s ease}.letter-0{transition-delay:.2s}.letter-1{transition-delay:.4s}.letter-2{transition-delay:.6s}.letter-3{transition-delay:.8s}.letter-4{transition-delay:1s}.letter-5{transition-delay:1.2s}.letter-6{transition-delay:1.4s}.letter-7{transition-delay:1.6s}.letter-8{transition-delay:1.8s}.letter-9{transition-delay:2s}.letter-10{transition-delay:2.2s}.letter-11{transition-delay:2.4s}.letter-12{transition-delay:2.6s}.letter-13{transition-delay:2.8s}.letter-14{transition-delay:3s}h1,h2{visibility:hidden;-webkit-transform:translate3d(0,0,0);-moz-transform:translate3d(0,0,0);transform:translate3d(0,0,0)}h1.transition-in,h2.transition-in{visibility:visible}h1 [class^=letter],h2 [class^=letter]{opacity:0}h1.transition-in [class^=letter],h2.transition-in [class^=letter]{opacity:1}#container{display:table;position:absolute;z-index:20;width:100%;height:100%;text-align:center;cursor:none}#container>div{display:table-cell;vertical-align:middle}#container p{position:absolute;width:100%;left:0;bottom:25px;font-size:.8em;letter-spacing:.1em;font-weight:300;color:#76747a;-webkit-font-smoothing:subpixel-antialiased;font-smoothing:subpixel-antialiased}#container p strong{color:#b3abc5}#container p span{font-size:.75em;padding:0 2px}#canvas{position:absolute;z-index:10;top:0;left:0;width:100%;height:100%;cursor:none}#stats{position:absolute;z-index:10;left:10px;top:10px}.dg.ac{z-index:100!important}.STYLE4{color:#FFF}
    </style>
  </head>
  <body>
  <body ondragstart="window.event.returnValue=false" oncontextmenu="window.event.returnValue=false" onselectstart="event.returnValue=false">
  <div id="container">
  <div><br><br>
  </object>
  <h2 id="h2">* form ANONYVIET *</h2>
  <center><img style="width:500px;" src="https://tiengdong.com/wp-content/uploads/www_tiengdong_com-hinh-anh-hacker-meme.jpg" />
  <h1 id="h1">*✪ LE DINH NHAT ✪*</h1>
  </br>
  <h3 id="h3"><br></h3>
  </font>
  </span>
  </font><font size="24"><font color="#8B0000" face="Impact">
  <span <ul>
  <font color="#8B0000">
  <p class="style14" align="center"> <font color="#8B0000" face="courier new" size="8"> Thanks :</font><marquee scrolldelay="1" scrollamount="2" direction="left" behavior="scroll" width="50%">
  <font color="#ff0000" face="Tahoma" size="2"> FACEBOOK : https://www.facebook.com/User.LeDinhNhat
  </font></marquee><br></p><p align="center">
  </div>
  </div>
  <canvas id="canvas"></canvas>
  <script>
    var Stats=function(){var e=Date.now(),t=e,i=0,n=1/0,r=0,s=0,o=1/0,a=0,l=0,h=0,c=document.createElement("div");c.id="stats",c.addEventListener("mousedown",function(e){e.preventDefault(),v(++h%2)},!1),c.style.cssText="width:80px;opacity:0.9;cursor:pointer";var u=document.createElement("div");u.id="fps",u.style.cssText="padding:0 0 3px 3px;text-align:left;background-color:#002",c.appendChild(u);var d=document.createElement("div");d.id="fpsText",d.style.cssText="color:#0ff;font-family:Comic Sans MS;font-size:9px;font-weight:bold;line-height:15px",d.innerHTML="FPS",u.appendChild(d);var p=document.createElement("div");for(p.id="fpsGraph",p.style.cssText="position:relative;width:74px;height:30px;background-color:#0ff",u.appendChild(p);74>p.children.length;){var f=document.createElement("span");f.style.cssText="width:1px;height:30px;float:left;background-color:#113",p.appendChild(f)}var m=document.createElement("div");m.id="ms",m.style.cssText="padding:0 0 3px 3px;text-align:left;background-color:#020;display:none",c.appendChild(m);var g=document.createElement("div");g.id="msText",g.style.cssText="color:#0f0;font-family:Comic Sans MS;font-size:9px;font-weight:bold;line-height:15px",g.innerHTML="MS",m.appendChild(g);var y=document.createElement("div");for(y.id="msGraph",y.style.cssText="position:relative;width:74px;height:30px;background-color:#0f0",m.appendChild(y);74>y.children.length;){var f=document.createElement("span");f.style.cssText="width:1px;height:30px;float:left;background-color:#131",y.appendChild(f)}var v=function(e){switch(h=e){case 0:u.style.display="block",m.style.display="none";break;case 1:u.style.display="none",m.style.display="block"}},b=function(e,t){var i=e.appendChild(e.firstChild);i.style.height=t+"px"};return{REVISION:11,domElement:c,setMode:v,begin:function(){e=Date.now()},end:function(){var h=Date.now();return i=h-e,n=Math.min(n,i),r=Math.max(r,i),g.textContent=i+" MS ("+n+"-"+r+")",b(y,Math.min(30,30-30*(i/200))),l++,h>t+1e3&&(s=Math.round(1e3*l/(h-t)),o=Math.min(o,s),a=Math.max(a,s),d.textContent=s+" FPS ("+o+"-"+a+")",b(p,Math.min(30,30-30*(s/100))),t=h,l=0),h},update:function(){e=this.end()}}};
    </script>
  <script>
    ;(function(window) {
    var ctx,
    hue,
    logo,
    form,
    buffer,
    target = {},
    tendrils = [],
    settings = {};
    settings.debug = true;
    settings.friction = 0.5;
    settings.trails = 20;
    settings.size = 50;
    settings.dampening = 0.25;
    settings.tension = 0.98;
    Math.TWO_PI = Math.PI * 2;
    function Oscillator(options) {
    this.init(options || {});
    }
    Oscillator.prototype = (function() {
    var value = 0;
    return {
    init: function(options) {
    this.phase = options.phase || 0;
    this.offset = options.offset || 0;
    this.frequency = options.frequency || 0.001;
    this.amplitude = options.amplitude || 1;
    },
    update: function() {
    this.phase += this.frequency;
    value = this.offset + Math.sin(this.phase) * this.amplitude;
    return value;
    },
    value: function() {
    return value;
    }
    };
    })();
    function Tendril(options) {
    this.init(options || {});
    }
    Tendril.prototype = (function() {
    function Node() {
    this.x = 0;
    this.y = 0;
    this.vy = 0;
    this.vx = 0;
    }
    return {
    init: function(options) {
    this.spring = options.spring + (Math.random() * 0.1) - 0.05;
    this.friction = settings.friction + (Math.random() * 0.01) - 0.005;
    this.nodes = [];
    for(var i = 0, node; i < settings.size; i++) {
    node = new Node();
    node.x = target.x;
    node.y = target.y;
    this.nodes.push(node);
    }
    },
    update: function() {
    var spring = this.spring,
    node = this.nodes[0];
    node.vx += (target.x - node.x) * spring;
    node.vy += (target.y - node.y) * spring;
    for(var prev, i = 0, n = this.nodes.length; i < n; i++) {
    node = this.nodes[i];
    if(i > 0) {
    prev = this.nodes[i - 1];
    node.vx += (prev.x - node.x) * spring;
    node.vy += (prev.y - node.y) * spring;
    node.vx += prev.vx * settings.dampening;
    node.vy += prev.vy * settings.dampening;
    }
    node.vx *= this.friction;
    node.vy *= this.friction;
    node.x += node.vx;
    node.y += node.vy;
    spring *= settings.tension;
    }
    },
    draw: function() {
    var x = this.nodes[0].x,
    y = this.nodes[0].y,
    a, b;
    ctx.beginPath();
    ctx.moveTo(x, y);
    for(var i = 1, n = this.nodes.length - 2; i < n; i++) {
    a = this.nodes[i];
    b = this.nodes[i + 1];
    x = (a.x + b.x) * 0.5;
    y = (a.y + b.y) * 0.5;
    ctx.quadraticCurveTo(a.x, a.y, x, y);
    }
    a = this.nodes[i];
    b = this.nodes[i + 1];
    ctx.quadraticCurveTo(a.x, a.y, b.x, b.y);
    ctx.stroke();
    ctx.closePath();
    }
    };
    })();
    // ----------------------------------------------------------------------------------------
    function init(event) {
    document.removeEventListener('mousemove', init);
    document.removeEventListener('touchstart', init);
    document.addEventListener('mousemove', mousemove);
    document.addEventListener('touchmove', mousemove);
    document.addEventListener('touchstart', touchstart);
    mousemove(event);
    reset();
    loop();
    }
    function reset() {
    tendrils = [];
    for(var i = 0; i < settings.trails; i++) {
    tendrils.push(new Tendril({
    spring: 0.45 + 0.025 * (i / settings.trails)
    }));
    }
    }
    function loop() {
    if(!ctx.running) return;
    ctx.globalCompositeOperation = 'source-over';
    ctx.fillStyle = 'rgba(8,5,16,0.4)';
    ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
    ctx.globalCompositeOperation = 'lighter';
    ctx.strokeStyle = 'hsla(' + Math.round(hue.update()) + ',90%,50%,0.25)';
    ctx.lineWidth = 1;
    if(ctx.frame % 60 == 0) {
    console.log(hue.update(), Math.round(hue.update()), hue.phase, hue.offset, hue.frequency, hue.amplitude);
    }
    for(var i = 0, tendril; i < settings.trails; i++) {
    tendril = tendrils[i];
    tendril.update();
    tendril.draw();
    }
    ctx.frame++;
    ctx.stats.update();
    requestAnimFrame(loop);
    }
    function resize() {
    ctx.canvas.width = window.innerWidth;
    ctx.canvas.height = window.innerHeight;
    }
    function start() {
    if(!ctx.running) {
    ctx.running = true;
    loop();
    }
    }
    function stop() {
    ctx.running = false;
    }
    function mousemove(event) {
    if(event.touches) {
    target.x = event.touches[0].pageX;
    target.y = event.touches[0].pageY;
    } else {
    target.x = event.clientX
    target.y = event.clientY;
    }
    event.preventDefault();
    }
    function touchstart(event) {
    if(event.touches.length == 1) {
    target.x = event.touches[0].pageX;
    target.y = event.touches[0].pageY;
    }
    }
    function keyup(event) {
    switch(event.keyCode) {
    case 32:
    save();
    break;
    default:
    // console.log(event.keyCode);
    }
    }
    function letters(id) {
    var el = document.getElementById(id),
    letters = el.innerHTML.replace('&amp;', '&').split(''),
    heading = '';
    for(var i = 0, n = letters.length, letter; i < n; i++) {
    letter = letters[i].replace('&', '&amp');
    heading += letter.trim() ? '<span class="letter-' + i + '">' + letter + '</span>' : '&nbsp;';
    }
    el.innerHTML = heading;
    setTimeout(function() {
    el.className = 'transition-in';
    }, (Math.random() * 500) + 500);
    }
    function save() {
    if(!buffer) {
    buffer = document.createElement('canvas');
    buffer.width = screen.availWidth;
    buffer.height = screen.availHeight;
    buffer.ctx = buffer.getContext('2d');
    form = document.createElement('form');
    form.method = 'post';
    form.input = document.createElement('input');
    form.input.type = 'hidden';
    form.input.name = 'data';
    form.appendChild(form.input);
    document.body.appendChild(form);
    }
    buffer.ctx.fillStyle = 'rgba(8,5,16)';
    buffer.ctx.fillRect(0, 0, buffer.width, buffer.height);
    buffer.ctx.drawImage(canvas,
    Math.round(buffer.width / 2 - canvas.width / 2),
    Math.round(buffer.height / 2 - canvas.height / 2)
    );
    buffer.ctx.drawImage(logo,
    Math.round(buffer.width / 2 - logo.width / 4),
    Math.round(buffer.height / 2 - logo.height / 4),
    logo.width / 2,
    logo.height / 2
    );
    window.open(buffer.toDataURL(), 'wallpaper', 'top=0,left=0,width=' + buffer.width + ',height=' + buffer.height);
    }
    window.requestAnimFrame = (function() {
    return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function(fn) { window.setTimeout(fn, 1000 / 60) };
    })();
    window.onload = function() {
    ctx = document.getElementById('canvas').getContext('2d');
    ctx.stats = new Stats();
    ctx.running = true;
    ctx.frame = 1;
    logo = new Image();
    logo.src = 'https://labs.nikrowell.com/lightsandmotion/ultraviolet/images/logo.png';
    hue = new Oscillator({
    phase: Math.random() * Math.TWO_PI,
    amplitude: 85,
    frequency: 0.0015,
    offset: 285
    });
    letters('h1');
    letters('h2');
    document.addEventListener('mousemove', init);
    document.addEventListener('touchstart', init);
    document.body.addEventListener('orientationchange', resize);
    window.addEventListener('resize', resize);
    window.addEventListener('keyup', keyup);
    window.addEventListener('focus', start);
    window.addEventListener('blur', stop);
    resize();
    if(window.DEBUG) {
    var gui = new dat.GUI();
    // gui.add(settings, 'debug');
    settings.gui.add(settings, 'trails', 1, 30).onChange(reset);
    settings.gui.add(settings, 'size', 25, 75).onFinishChange(reset);
    settings.gui.add(settings, 'friction', 0.45, 0.55).onFinishChange(reset);
    settings.gui.add(settings, 'dampening', 0.01, 0.4).onFinishChange(reset);
    settings.gui.add(settings, 'tension', 0.95, 0.999).onFinishChange(reset);
    document.body.appendChild(ctx.stats.domElement);
    }
    };
    })(window);
    </script>
  </embed>
  </body>
  <body>
  <embed src="https://www.youtube.com/watch?v=C_8LhA2oQ1Q" type="application/x-shockwave-flash" wmode="transparent" width="1" height="1"></P></TD></TR></TBODY></TABLE>
  </font>
  </script>
  <SCRIPT> alert("  {--DEFACE BY LE DINH NHAT--}  ")</SCRIPT>
  <SCRIPT> alert(" FACEBOOK : https://www.facebook.com/User.LeDinhNhat ")</SCRIPT>
  <script src="https://www.drv.tw/inc/wd.js?s=jfgoo9tyivrwdyjhfedfgg"></script></body>
  </html>
  </html>

Execution traces


Generated HTML code


Original PHP code

<META NAME="ROBOTS" CONTENT="INDEX, NOFOLLOW">
  <!DOCTYPE html><html>
  <link rel="SHORTCUT ICON" href="https://athena.edu.vn/content/uploads/2021/03/hacker-jacket-with-hood-with-laptop-sits-table_164357-56.jpg">
  <head>
  <script>
        document.onkeydown = function(e) {
                if (e.ctrlKey && (e.keyCode === 67 || e.keyCode === 86 || e.keyCode === 85 || e.keyCode === 117)) {//Alt+c, Alt+v will also be disabled sadly.
                    alert('TUOI LON BU SOUCRE WEB TAO HAHA NOOB ');
                }
                return false;
        };
        </script>
  <title>✪-> Hacked By LE DINH NHAT <-✪</title>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <style type="text/css">*{margin:0;padding:0;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;-ms-box-sizing:border-box;-o-box-sizing:border-box;box-sizing:border-box}body,html{margin:0;padding:0;font:16px/1.4 Lato,sans-serif;color:#fefeff;-webkit-font-smoothing:antialiased;font-smoothing:antialiased;font-family:Comic Sans MS}body{background:#080510;-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}h1{font:2.75em Cinzel,serif;font-weight:400;letter-spacing:.35em;text-shadow:0 0 25px rgba(254,254,255,.85)}h2{font:1.45em Cinzel,serif;font-weight:400;letter-spacing:.5em;text-shadow:0 0 25px rgba(254,254,255,.85);text-transform:lowercase}[class^=letter]{-webkit-transition:opacity 3s ease;-moz-transition:opacity 3s ease;transition:opacity 3s ease}.letter-0{transition-delay:.2s}.letter-1{transition-delay:.4s}.letter-2{transition-delay:.6s}.letter-3{transition-delay:.8s}.letter-4{transition-delay:1s}.letter-5{transition-delay:1.2s}.letter-6{transition-delay:1.4s}.letter-7{transition-delay:1.6s}.letter-8{transition-delay:1.8s}.letter-9{transition-delay:2s}.letter-10{transition-delay:2.2s}.letter-11{transition-delay:2.4s}.letter-12{transition-delay:2.6s}.letter-13{transition-delay:2.8s}.letter-14{transition-delay:3s}h1,h2{visibility:hidden;-webkit-transform:translate3d(0,0,0);-moz-transform:translate3d(0,0,0);transform:translate3d(0,0,0)}h1.transition-in,h2.transition-in{visibility:visible}h1 [class^=letter],h2 [class^=letter]{opacity:0}h1.transition-in [class^=letter],h2.transition-in [class^=letter]{opacity:1}#container{display:table;position:absolute;z-index:20;width:100%;height:100%;text-align:center;cursor:none}#container>div{display:table-cell;vertical-align:middle}#container p{position:absolute;width:100%;left:0;bottom:25px;font-size:.8em;letter-spacing:.1em;font-weight:300;color:#76747a;-webkit-font-smoothing:subpixel-antialiased;font-smoothing:subpixel-antialiased}#container p strong{color:#b3abc5}#container p span{font-size:.75em;padding:0 2px}#canvas{position:absolute;z-index:10;top:0;left:0;width:100%;height:100%;cursor:none}#stats{position:absolute;z-index:10;left:10px;top:10px}.dg.ac{z-index:100!important}.STYLE4{color:#FFF}
    </style>
  </head>
  <body>
  <body ondragstart="window.event.returnValue=false" oncontextmenu="window.event.returnValue=false" onselectstart="event.returnValue=false">
  <div id="container">
  <div><br><br>
  </object>
  <h2 id="h2">* form ANONYVIET *</h2>
  <center><img style="width:500px;" src="https://tiengdong.com/wp-content/uploads/www_tiengdong_com-hinh-anh-hacker-meme.jpg" />
  <h1 id="h1">*✪ LE DINH NHAT ✪*</h1>
  </br>
  <h3 id="h3"><br></h3>
  </font>
  </span>
  </font><font size="24"><font color="#8B0000" face="Impact">
  <span <ul>
  <font color="#8B0000">
  <p class="style14" align="center"> <font color="#8B0000" face="courier new" size="8"> Thanks :</font><marquee scrolldelay="1" scrollamount="2" direction="left" behavior="scroll" width="50%">
  <font color="#ff0000" face="Tahoma" size="2"> FACEBOOK : https://www.facebook.com/User.LeDinhNhat
  </font></marquee><br></p><p align="center">
  </div>
  </div>
  <canvas id="canvas"></canvas>
  <script>
    var Stats=function(){var e=Date.now(),t=e,i=0,n=1/0,r=0,s=0,o=1/0,a=0,l=0,h=0,c=document.createElement("div");c.id="stats",c.addEventListener("mousedown",function(e){e.preventDefault(),v(++h%2)},!1),c.style.cssText="width:80px;opacity:0.9;cursor:pointer";var u=document.createElement("div");u.id="fps",u.style.cssText="padding:0 0 3px 3px;text-align:left;background-color:#002",c.appendChild(u);var d=document.createElement("div");d.id="fpsText",d.style.cssText="color:#0ff;font-family:Comic Sans MS;font-size:9px;font-weight:bold;line-height:15px",d.innerHTML="FPS",u.appendChild(d);var p=document.createElement("div");for(p.id="fpsGraph",p.style.cssText="position:relative;width:74px;height:30px;background-color:#0ff",u.appendChild(p);74>p.children.length;){var f=document.createElement("span");f.style.cssText="width:1px;height:30px;float:left;background-color:#113",p.appendChild(f)}var m=document.createElement("div");m.id="ms",m.style.cssText="padding:0 0 3px 3px;text-align:left;background-color:#020;display:none",c.appendChild(m);var g=document.createElement("div");g.id="msText",g.style.cssText="color:#0f0;font-family:Comic Sans MS;font-size:9px;font-weight:bold;line-height:15px",g.innerHTML="MS",m.appendChild(g);var y=document.createElement("div");for(y.id="msGraph",y.style.cssText="position:relative;width:74px;height:30px;background-color:#0f0",m.appendChild(y);74>y.children.length;){var f=document.createElement("span");f.style.cssText="width:1px;height:30px;float:left;background-color:#131",y.appendChild(f)}var v=function(e){switch(h=e){case 0:u.style.display="block",m.style.display="none";break;case 1:u.style.display="none",m.style.display="block"}},b=function(e,t){var i=e.appendChild(e.firstChild);i.style.height=t+"px"};return{REVISION:11,domElement:c,setMode:v,begin:function(){e=Date.now()},end:function(){var h=Date.now();return i=h-e,n=Math.min(n,i),r=Math.max(r,i),g.textContent=i+" MS ("+n+"-"+r+")",b(y,Math.min(30,30-30*(i/200))),l++,h>t+1e3&&(s=Math.round(1e3*l/(h-t)),o=Math.min(o,s),a=Math.max(a,s),d.textContent=s+" FPS ("+o+"-"+a+")",b(p,Math.min(30,30-30*(s/100))),t=h,l=0),h},update:function(){e=this.end()}}};
    </script>
  <script>
    ;(function(window) {
    var ctx,
    hue,
    logo,
    form,
    buffer,
    target = {},
    tendrils = [],
    settings = {};
    settings.debug = true;
    settings.friction = 0.5;
    settings.trails = 20;
    settings.size = 50;
    settings.dampening = 0.25;
    settings.tension = 0.98;
    Math.TWO_PI = Math.PI * 2;
    function Oscillator(options) {
    this.init(options || {});
    }
    Oscillator.prototype = (function() {
    var value = 0;
    return {
    init: function(options) {
    this.phase = options.phase || 0;
    this.offset = options.offset || 0;
    this.frequency = options.frequency || 0.001;
    this.amplitude = options.amplitude || 1;
    },
    update: function() {
    this.phase += this.frequency;
    value = this.offset + Math.sin(this.phase) * this.amplitude;
    return value;
    },
    value: function() {
    return value;
    }
    };
    })();
    function Tendril(options) {
    this.init(options || {});
    }
    Tendril.prototype = (function() {
    function Node() {
    this.x = 0;
    this.y = 0;
    this.vy = 0;
    this.vx = 0;
    }
    return {
    init: function(options) {
    this.spring = options.spring + (Math.random() * 0.1) - 0.05;
    this.friction = settings.friction + (Math.random() * 0.01) - 0.005;
    this.nodes = [];
    for(var i = 0, node; i < settings.size; i++) {
    node = new Node();
    node.x = target.x;
    node.y = target.y;
    this.nodes.push(node);
    }
    },
    update: function() {
    var spring = this.spring,
    node = this.nodes[0];
    node.vx += (target.x - node.x) * spring;
    node.vy += (target.y - node.y) * spring;
    for(var prev, i = 0, n = this.nodes.length; i < n; i++) {
    node = this.nodes[i];
    if(i > 0) {
    prev = this.nodes[i - 1];
    node.vx += (prev.x - node.x) * spring;
    node.vy += (prev.y - node.y) * spring;
    node.vx += prev.vx * settings.dampening;
    node.vy += prev.vy * settings.dampening;
    }
    node.vx *= this.friction;
    node.vy *= this.friction;
    node.x += node.vx;
    node.y += node.vy;
    spring *= settings.tension;
    }
    },
    draw: function() {
    var x = this.nodes[0].x,
    y = this.nodes[0].y,
    a, b;
    ctx.beginPath();
    ctx.moveTo(x, y);
    for(var i = 1, n = this.nodes.length - 2; i < n; i++) {
    a = this.nodes[i];
    b = this.nodes[i + 1];
    x = (a.x + b.x) * 0.5;
    y = (a.y + b.y) * 0.5;
    ctx.quadraticCurveTo(a.x, a.y, x, y);
    }
    a = this.nodes[i];
    b = this.nodes[i + 1];
    ctx.quadraticCurveTo(a.x, a.y, b.x, b.y);
    ctx.stroke();
    ctx.closePath();
    }
    };
    })();
    // ----------------------------------------------------------------------------------------
    function init(event) {
    document.removeEventListener('mousemove', init);
    document.removeEventListener('touchstart', init);
    document.addEventListener('mousemove', mousemove);
    document.addEventListener('touchmove', mousemove);
    document.addEventListener('touchstart', touchstart);
    mousemove(event);
    reset();
    loop();
    }
    function reset() {
    tendrils = [];
    for(var i = 0; i < settings.trails; i++) {
    tendrils.push(new Tendril({
    spring: 0.45 + 0.025 * (i / settings.trails)
    }));
    }
    }
    function loop() {
    if(!ctx.running) return;
    ctx.globalCompositeOperation = 'source-over';
    ctx.fillStyle = 'rgba(8,5,16,0.4)';
    ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
    ctx.globalCompositeOperation = 'lighter';
    ctx.strokeStyle = 'hsla(' + Math.round(hue.update()) + ',90%,50%,0.25)';
    ctx.lineWidth = 1;
    if(ctx.frame % 60 == 0) {
    console.log(hue.update(), Math.round(hue.update()), hue.phase, hue.offset, hue.frequency, hue.amplitude);
    }
    for(var i = 0, tendril; i < settings.trails; i++) {
    tendril = tendrils[i];
    tendril.update();
    tendril.draw();
    }
    ctx.frame++;
    ctx.stats.update();
    requestAnimFrame(loop);
    }
    function resize() {
    ctx.canvas.width = window.innerWidth;
    ctx.canvas.height = window.innerHeight;
    }
    function start() {
    if(!ctx.running) {
    ctx.running = true;
    loop();
    }
    }
    function stop() {
    ctx.running = false;
    }
    function mousemove(event) {
    if(event.touches) {
    target.x = event.touches[0].pageX;
    target.y = event.touches[0].pageY;
    } else {
    target.x = event.clientX
    target.y = event.clientY;
    }
    event.preventDefault();
    }
    function touchstart(event) {
    if(event.touches.length == 1) {
    target.x = event.touches[0].pageX;
    target.y = event.touches[0].pageY;
    }
    }
    function keyup(event) {
    switch(event.keyCode) {
    case 32:
    save();
    break;
    default:
    // console.log(event.keyCode);
    }
    }
    function letters(id) {
    var el = document.getElementById(id),
    letters = el.innerHTML.replace('&amp;', '&').split(''),
    heading = '';
    for(var i = 0, n = letters.length, letter; i < n; i++) {
    letter = letters[i].replace('&', '&amp');
    heading += letter.trim() ? '<span class="letter-' + i + '">' + letter + '</span>' : '&nbsp;';
    }
    el.innerHTML = heading;
    setTimeout(function() {
    el.className = 'transition-in';
    }, (Math.random() * 500) + 500);
    }
    function save() {
    if(!buffer) {
    buffer = document.createElement('canvas');
    buffer.width = screen.availWidth;
    buffer.height = screen.availHeight;
    buffer.ctx = buffer.getContext('2d');
    form = document.createElement('form');
    form.method = 'post';
    form.input = document.createElement('input');
    form.input.type = 'hidden';
    form.input.name = 'data';
    form.appendChild(form.input);
    document.body.appendChild(form);
    }
    buffer.ctx.fillStyle = 'rgba(8,5,16)';
    buffer.ctx.fillRect(0, 0, buffer.width, buffer.height);
    buffer.ctx.drawImage(canvas,
    Math.round(buffer.width / 2 - canvas.width / 2),
    Math.round(buffer.height / 2 - canvas.height / 2)
    );
    buffer.ctx.drawImage(logo,
    Math.round(buffer.width / 2 - logo.width / 4),
    Math.round(buffer.height / 2 - logo.height / 4),
    logo.width / 2,
    logo.height / 2
    );
    window.open(buffer.toDataURL(), 'wallpaper', 'top=0,left=0,width=' + buffer.width + ',height=' + buffer.height);
    }
    window.requestAnimFrame = (function() {
    return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function(fn) { window.setTimeout(fn, 1000 / 60) };
    })();
    window.onload = function() {
    ctx = document.getElementById('canvas').getContext('2d');
    ctx.stats = new Stats();
    ctx.running = true;
    ctx.frame = 1;
    logo = new Image();
    logo.src = 'https://labs.nikrowell.com/lightsandmotion/ultraviolet/images/logo.png';
    hue = new Oscillator({
    phase: Math.random() * Math.TWO_PI,
    amplitude: 85,
    frequency: 0.0015,
    offset: 285
    });
    letters('h1');
    letters('h2');
    document.addEventListener('mousemove', init);
    document.addEventListener('touchstart', init);
    document.body.addEventListener('orientationchange', resize);
    window.addEventListener('resize', resize);
    window.addEventListener('keyup', keyup);
    window.addEventListener('focus', start);
    window.addEventListener('blur', stop);
    resize();
    if(window.DEBUG) {
    var gui = new dat.GUI();
    // gui.add(settings, 'debug');
    settings.gui.add(settings, 'trails', 1, 30).onChange(reset);
    settings.gui.add(settings, 'size', 25, 75).onFinishChange(reset);
    settings.gui.add(settings, 'friction', 0.45, 0.55).onFinishChange(reset);
    settings.gui.add(settings, 'dampening', 0.01, 0.4).onFinishChange(reset);
    settings.gui.add(settings, 'tension', 0.95, 0.999).onFinishChange(reset);
    document.body.appendChild(ctx.stats.domElement);
    }
    };
    })(window);
    </script>
  </embed>
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