PDF malware analysis — malicious · a57a44bac4fa0f89

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: 96e79902eb2daf55ea77ac7e7d3229c4 SHA-1: 2cb2e1d4224c8b1566a5da5d7e02a0b80de6544a SHA-256: a57a44bac4fa0f89374fbcdf995fb3247d34955e5b1cd2ceed4cd0e7891e9cd4

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by a ClamAV signature (Pdf.Exploit.Agent-36118) and an ML classifier. It contains embedded JavaScript with multiple eval() calls, indicating obfuscated code execution. The script is designed to download and execute a second-stage payload, which is a common technique for delivering malware. The specific exploit used is not detailed in the provided evidence, but the presence of JavaScript and eval() strongly suggests an exploit attempt.

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` `c8cb6f757bd457c22d4a1393b15490025116c344b362ed60e3f43ebcd9d0b84b`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13328 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

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