PDF malware analysis — malicious · 5977bb5ff54ddfa2

MALICIOUS

PDF

14.7 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 6137adc56af20569aff9f01fee0ecdc2 SHA-1: 8d17b6051a78cb8b8b32bcd65615894b2d4c6e8f SHA-256: 5977bb5ff54ddfa2d3469d40a1a079fcd71aa4aa6c20f6c7bfcc0e5029dd389a

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript with an eval() call, a common technique for obfuscating malicious code. The ClamAV detection 'Pdf.Exploit.Agent-36118' and the heuristic firing for 'PDF_EVAL' strongly indicate the exploitation of a PDF vulnerability. The JavaScript is heavily obfuscated, but the presence of eval() suggests it's designed to download and execute a secondary payload. The document body itself is not user-readable text but rather obfuscated code.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
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_000.js` `f223bc247ca5b587e4f6983c932ed85fb0320509a7ce9fbea95d95655627a525`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13466 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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