PDF malware analysis — malicious · efa6ad7148e9bf59

MALICIOUS

PDF

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

MD5: 9ef05d3a0006b0c9e357213fdfa75c31 SHA-1: 5628220994e4d7f15466d3db3d04893e2b8f361f SHA-256: efa6ad7148e9bf59ad907aa3ebe5f1637e8fdd4cafbc52e3971281e8b70503a4

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple obfuscation layers, including the use of eval() and string concatenation. Heuristics indicate a PDF JavaScript action and an embedded JS stream, with a critical ClamAV detection for 'Pdf.Exploit.Agent-36118'. The script's structure suggests it attempts to reconstruct and execute code, likely downloading a secondary payload. The obfuscated nature of the script prevents a more precise determination of its exact actions or a specific family attribution.

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` `ef84e966d930ab42aa811a42e08398dc1fe131642eb5da87cce4c7fae3b01b35`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13225 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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