PDF malware analysis — malicious · 37df396ef3a00a25

MALICIOUS

PDF

12.4 KB

MD5: b758ef781b93a1e8a780833bd49c2b50 SHA-1: a4a1890e4956a9d71632cf6982779f7fba9c7258 SHA-256: 37df396ef3a00a25c977bfd7564421077e485c41e9fd1f2d1199024d880af90b

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF contains embedded JavaScript, indicated by multiple heuristic firings and the presence of an extracted JavaScript file. The ML classifier and ClamAV detections strongly suggest malicious intent, likely involving the execution of an exploit. The embedded JavaScript is the primary mechanism for delivering the malicious 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` `12fe3c61533e553f0ca537c543333af0d7ea2fb8bc6ba4bd8ad89d9f2fcdd002`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11566 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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