PDF malware analysis — malicious · 3a5667330b9283ee

MALICIOUS

PDF

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

MD5: 91a3645b2af0c12e653a4ceacb0ef0aa SHA-1: 21d8f407d59f04b8036a9a6855b177b0aaf903f8 SHA-256: 3a5667330b9283ee472ef59ff7f6efb00ce9c6f16313a58afc09cfea0dd64bc0

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript with multiple obfuscation layers, including the use of `eval()` and string concatenation. The heuristic `PDF_EVAL` and `PDF_JAVASCRIPT` firings indicate the presence of executable code. The ClamAV detection `Pdf.Exploit.Agent-36118` strongly suggests a known exploit is being leveraged. The script's reconstructed intent is to execute further obfuscated code, likely for downloading and executing a secondary payload.

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` `19ba80179815874a9fc30fe1f7490228f1e981463794ec8405e2ee39b417f4bc`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13731 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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