PDF malware analysis — malicious · 916d76cc58b053ae

MALICIOUS

PDF

6.6 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 3b4bc60c147750020fa92066d5347052 SHA-1: 1f9266f10d489026e26e4390626de007f7cf151e SHA-256: 916d76cc58b053ae2a15ac4711bbb7b5859b8e1690fc75ca377189100975105d

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1059.007 JavaScript/JScript

The PDF contains embedded JavaScript with multiple eval() calls, indicating an attempt to obfuscate and execute malicious code. The ClamAV detection 'Pdf.Exploit.Agent-35587' further confirms its malicious nature. The script's obfuscation makes it difficult to determine the exact payload, but the presence of eval() and embedded JS strongly suggests an exploit attempt.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35587 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35587
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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_001.js` `bef035dd6b8a3802424fde345659f531d48d0d3517d4e9010a7dcb41c1de8a82`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38C	5178 bytes
Detection ClamAV: Pdf.Exploit.Agent-35587 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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