PDF malware analysis — malicious · dedec0fd3bc9691a

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: 76aa2b7f68e73f9481198c0de7644265 SHA-1: 93a41d682afa43319c7cff119438f9794f038805 SHA-256: dedec0fd3bc9691afd88f1408efcf1a547876062451105ca5a7816d56dfca2ae

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 high likelihood of exploit code, specifically targeting PDF vulnerabilities. The ClamAV detection name 'Pdf.Exploit.Agent-36118' further supports this. The script's primary function appears to be downloading and executing a secondary payload, as suggested by the `eval()` calls and the structure of the embedded JavaScript.

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` `785e4533816699fc059f642641cf6a3e5e030c2af7e33dcf1f6d680b88e86545`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13479 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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