PDF malware analysis — malicious · 8b8106f301ed6e34

MALICIOUS

PDF

23.8 KB

MD5: d7f6edaf55b877999ea49fe270c29c85 SHA-1: 6a2495e7b426b7a37cc0366b76247123d92d69ba SHA-256: 8b8106f301ed6e34d70947d72cd4ddc660cce7ad85a11cb548e48630f4eb8e3b

168 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically detecting an embedded JavaScript exploit. The embedded JavaScript stream is the primary indicator of malicious activity, suggesting it's designed to execute arbitrary code. The ML classifier and ClamAV detections strongly indicate this PDF is a known exploit delivery mechanism.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36114 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36114
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.
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_obj0008_000.js` `7eea35cc9cb7f43225e51edeac58e9f190774dcd0b9979aa19ce766daa6e4274`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2687 bytes
Detection ClamAV: Pdf.Exploit.Agent-36307 Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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