PDF malware analysis — malicious · a6fada29c6799dda

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: b3b3bd4e7ba6223336e3428c01dd1d87 SHA-1: 7dafb393f69ccc0ee6e7a5e01c55a0c4a73954de SHA-256: a6fada29c6799ddaf87effe3e13cfc10eacb0c5cdfcbf96249c408773f913dfe

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. A high-confidence heuristic, PDF_EVAL, specifically flags the use of eval(), which is commonly used to deobfuscate and execute malicious code. The ML classifier also strongly indicates maliciousness. The primary attack pattern involves leveraging JavaScript within the PDF to download and execute further malicious content. No specific family could be identified, and the obfuscated nature of the script prevents a more detailed analysis of its exact actions or IOCs beyond the use of eval().

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` `ab15c647f51925536e6ceabf048e82e9f795b56bf86a391aa1ab60d5507ea8d2`	pdf-javascript-stream	PDF /JS object 13 at offset 0x365	6387 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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