PDF malware analysis — malicious · 1a59317e593cecf6

MALICIOUS

PDF

7.4 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: b9f31ea90fc05a26438bfd3b816ace21 SHA-1: 1218087b1b0b431d7f5ae39ae43d363c34291046 SHA-256: 1a59317e593cecf6d9bbbf95e239b5100bf617656f3f0c7647389d23ec27bc68

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and a machine learning classifier. It contains embedded JavaScript with multiple eval() calls, indicating obfuscated code execution. The JavaScript is likely responsible for downloading and executing a second-stage payload. The presence of PDF-specific heuristics further supports its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35587 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35587
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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_001.js` `47600d4f9ce604bf92a84837b84a1698035ae33fedcfb819a785bc18f2f52909`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D7	5924 bytes
Detection ClamAV: Pdf.Exploit.Agent-35587 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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