PDF malware analysis — malicious · a0829511b911825f

MALICIOUS

PDF

3.2 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 450785977f80c020105112040c40b99e SHA-1: 977f34a04c79e157c5b014196d9a37db5f8d0722 SHA-256: a0829511b911825f070f825482fe44163f730db813df4526e006cdc877048513

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream utilizes eval() and unescape() functions, suggesting obfuscation and dynamic code execution. The primary intent appears to be the execution of this embedded script, which is likely to download and execute a second-stage payload. The script itself, named 'javascript_obj0013_001.js', is the main artifact of interest.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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` `0062437b957fc94d424c5b233c057f603260d8834bb2e4e29d6b7d551681c4eb`	pdf-javascript-stream	PDF /JS object 13 at offset 0x360	7413 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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