PDF malware analysis — malicious · 4a00abf81e06027e

MALICIOUS

PDF

4.7 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: e8c0da0cd23436627d8e1a81fae9633e SHA-1: f6d7bd913ae6f40e41389a827ea3101a832a1526 SHA-256: 4a00abf81e06027eb2d9c36dd420e529af7c99f124b3e334cb01a598a151a5f7

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. A high-confidence heuristic, PDF_EVAL, specifically flags the use of eval(), which is commonly used to de-obfuscate and execute malicious code. The ML classifier also strongly indicates maliciousness. The presence of obfuscated JavaScript suggests the primary intent is to download and execute a secondary payload, although the specific URL or execution method could not be determined from the provided evidence.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_001.js` `f0687b83c42f5d687079f36f7833b605beed20da8935dc2cd204c93fa40c6310`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6430 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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