PDF malware analysis — malicious · 1cb7458b4512b44b

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: ad1aecc6489aba460aa7c8fe1af477b8 SHA-1: 3cfe2f4f0a945ea958b8424ed0cabad5b0f597e6 SHA-256: 1cb7458b4512b44b4f6bad998511fb084e5559024b3e42afe03fc8f96ef28606

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 code execution. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically an exploit. The JavaScript is designed to execute arbitrary code, likely downloading and running a second-stage payload. The presence of 'eval()' and 'javascript_obj0013_000.js' points to a common PDF exploit delivery mechanism.

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` `36699e25a223df7f13d715d217ec3217e395135ec56c725ad696ed0289c9e6d6`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13263 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 16 long base64-like blob(s).

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