PDF malware analysis — malicious · 92961787f5874ced

MALICIOUS

PDF

14.4 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: ff09586c4d2013940d887d5e1770b428 SHA-1: 363106056e201f640f68c360a04582ba410ba93f SHA-256: 92961787f5874ced8767177a3ae428f28f0fe27a645c0992c33636d0b1ea3451

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

This PDF document contains embedded JavaScript, as indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier and ClamAV detection strongly suggest malicious intent. The script utilizes eval() to execute obfuscated code, which is a common technique for exploiting PDF vulnerabilities. The reconstructed string 'eval(tts dff[jio ol])' points to the execution of arbitrary code.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
JavaScript action low 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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `ae873b0d06aa7318f8294c2714eb5b750c4acb20475bc9030308255f40cce9a8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13214 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).

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