PDF malware analysis — malicious · 50734f3ce82e7ddf

MALICIOUS

PDF

12.6 KB

MD5: a9def38b9180be09f917ed05ed483a0a SHA-1: 003f74848dd413e256fe49e0380c44cb5d866925 SHA-256: 50734f3ce82e7ddfc1d5e2f38a2d4f9ed34e5d8f8591a618ce3546048dd42db5

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file was flagged as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV detections. The presence of embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics, suggests an attempt to execute malicious code. The ClamAV detections 'Pdf.Exploit.Agent-36365' and 'Pdf.Exploit.Agent-36364' point to a known exploit targeting PDF documents.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36365 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36365
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0076_000.js` `99fb7a820f5d7238010d240d34c9bec6725a98b5df5cbe85318498f0928e70ef`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11810 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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