PDF malware analysis — malicious · fd24bdfb201bf51a

MALICIOUS

PDF

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

MD5: dadeea4e74467600b453595f8a9a062f SHA-1: 974d776afa62f8d0093b58d713e06cd39cf2b1cf SHA-256: fd24bdfb201bf51a581228e79dfef1064547e96ce4bc97d14a33722c6ce8fa45

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF contains embedded JavaScript with multiple eval() calls, indicating an attempt to obfuscate and execute malicious code. The ML classifier strongly flagged this PDF as malicious. The primary function appears to be downloading and executing a second-stage payload, as suggested by the heuristic firings and the presence of an embedded JavaScript stream.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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` `5ba52c6af4fc37a1eebb5a9f3480e9b8e2965543bd50b279d133159e4c7ac0ab`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	9159 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 9 long base64-like blob(s).

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