PDF malware analysis — malicious · 515065e7f21e4056

MALICIOUS

PDF

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

MD5: eece80caddecde115bb3e3c760e347b0 SHA-1: 289cdf10edd52cc5ccbc41ab1e0c211afc4e8d30 SHA-256: 515065e7f21e4056fdb379fa64456c8cd9ff4f7e52308e3060c881485362dbdc

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple eval() calls, indicating obfuscated malicious code. The ML classifier and ClamAV detection strongly suggest this is a malicious PDF exploiting a vulnerability. The embedded JavaScript is designed to execute arbitrary code, likely downloading and running a second-stage payload. The specific exploit used is identified by ClamAV as Pdf.Exploit.Agent-36118.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `f519bec8dce6df680b59f1c5262a027c306f1e5e60f985ba733d1b66d5905e98`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13277 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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