PDF malware analysis — malicious · 3b518beda53277a6

MALICIOUS

PDF

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

MD5: f95a8c73ad42e31f29e449e822385823 SHA-1: 3e490bb627c0dad9eafa7ba9bc77cb065a3f3fee SHA-256: 3b518beda53277a63f43f8f31dcb5afddb67e3791349868532acc2f0b457611f

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a known exploit. It contains embedded JavaScript with an `eval()` call, which is highly suspicious and likely used to execute arbitrary code. The JavaScript is obfuscated, but the presence of `eval()` and the ML detection strongly suggest it's designed to download and execute a secondary payload. The specific exploit is identified as Pdf.Exploit.Agent-36118.

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` `389f88eacd0084a438801d749b4912ab77ea914258afcb70377c423ad14d50e2`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13656 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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