PDF malware analysis — malicious · 349fa0081ee703ab

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: b544c607cddc42725adbdea8922a693e SHA-1: 707dbfd21c58db425e6e0c61018886fd35820561 SHA-256: 349fa0081ee703ab2a1af0070e85fad2760b24bb86481391ca8df66efa8fd586

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file was flagged as malicious by an ML classifier with high confidence. Static analysis detected embedded JavaScript, including an eval() call, which is often used to deobfuscate and execute malicious code. The JavaScript stream is obfuscated, preventing a detailed analysis of its specific actions, but the presence of eval() strongly suggests it's designed to download and execute a second-stage payload. The file's authoring application and creation date do not indicate a specific threat actor or campaign.

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` `59348488087db23c90391d183447c367ec4d07c2e464ada5c9723ea17241e513`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6173 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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