PDF malware analysis — malicious · 8fe40a255ef3ae26

MALICIOUS

PDF

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

MD5: d4297496c2549b057f965653d33030d5 SHA-1: 2aa1690fd6191d9d4831ce38cc1885109124eccd SHA-256: 8fe40a255ef3ae263ec850f27e8e0eaccc685c982073dd37f19583360d5da52b

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file was flagged as malicious by an ML classifier and contains embedded JavaScript. The JavaScript stream includes an eval() call, indicating that obfuscated code is being executed. The primary function of the script appears to be the execution of arbitrary code, likely to download and run a second-stage payload. The PDF itself does not contain user-readable content, suggesting it is purely a delivery mechanism.

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` `a6503a59c3e63e98993cb65fafe046cf70bb2061eb669b54a16b30b9706e943f`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6471 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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