PDF malware analysis — malicious · 256238a69f4f6b8a

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: ba33824fa6e1947bec6be8d02c40be41 SHA-1: 0a5272912f1c14bbce9dbd80dd32c91886b7d078 SHA-256: 256238a69f4f6b8afe930f9ce13e4d9cbffbad6baa7b202e215c6ac94c5e11f0

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple obfuscation layers, including the use of `eval()` and string concatenation. ClamAV detected this file as 'Pdf.Exploit.Agent-36118', indicating a known exploit. The JavaScript is designed to execute arbitrary code, likely downloading and executing a secondary payload. The obfuscation makes it difficult to determine the exact payload or destination without dynamic analysis.

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` `66c351bb4af1620193f9cbc5c0acd838e9d398d60da64283744b25b3becae54c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13508 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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