PDF malware analysis — malicious · 9b04ac88e7860e23

MALICIOUS

PDF

2.7 KB Created: 2008-12-17 23:30:58 UTC

MD5: 2df71a2e287d309e87a1d007aff73803 SHA-1: feebf01893d1c24a76f14d515726ccfb4c841242 SHA-256: 9b04ac88e7860e230843eabd46ac4451580861bae227dd2d95a54ca785345dfe

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, flagged by multiple heuristics including a high-severity eval() call. The ML classifier strongly indicates maliciousness. The JavaScript is likely responsible for executing a malicious payload, though its exact function is obfuscated. The presence of eval() suggests dynamic code execution, a common technique for downloading and running further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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_obj0006_000.js` `48c2de7d12a249cf77e724fc1ddc0a380a7e63dcb13a1801901b021699800750`	pdf-javascript-stream	PDF /JS object 6 at offset 0xB5	3793 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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