PDF malware analysis — malicious · b3d66098a13bdcbf

MALICIOUS

PDF

2.7 KB Created: 2892-01-01 Authoring application: 4717

MD5: f247da364158af8923e380466371b7a8 SHA-1: 8dad39ae0686660eac690277e9d97201f7bc52dc SHA-256: b3d66098a13bdcbfba2799348c53db0311087ad74502d6cf58d7bf9202ce3f00

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically targeting PDF exploits. The extracted artifact 'javascript_obj0013_001.js' likely contains obfuscated code designed to exploit vulnerabilities, as suggested by the EXTRACTED_FILE_STATIC_TRIAGE heuristic. The exact function of the script is not fully discernible due to obfuscation, but it is characteristic of a PDF exploit delivery mechanism.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `c92c0f05c29ff49f86ec5dbe8d5ef1ea91e7bab7b0fe82468e7ae792ed8223aa`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4794 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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