PDF malware analysis — malicious · ad42d19c205c3bf4

MALICIOUS

PDF

12.2 KB

MD5: 96d71e12e5e9afabfb8e8f81d983739e SHA-1: 52590a0d9f4a8c09cb64a9dae025e9c14ef6d76d SHA-256: ad42d19c205c3bf46ec73b5188bc29a5b597b19b8fb4a3ed232906e06e0c9a03

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 critical ClamAV detections. The presence of embedded JavaScript and PDF-specific exploit signatures indicates the file attempts to leverage a vulnerability to execute code. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

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` `5275bc22ed8d476d3c27c50b28f865f8c939f06545dfb8625033ed5acc60ab28`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11378 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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