PDF malware analysis — malicious · ca037be9cb0d20c3

MALICIOUS

PDF

12.3 KB

MD5: 0388aaa1adb5a015599a650c547e56c4 SHA-1: 54236410ab5c3f9510eb2026a01984172dfaf536 SHA-256: ca037be9cb0d20c3dc60dc43aecf0136ea7d461fe9f90b2018aed65379b74608

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. Critical detections from ClamAV indicate it is a known exploit, specifically 'Pdf.Exploit.Agent-36365' and 'Pdf.Exploit.Agent-36364'. The presence of embedded JavaScript streams strongly suggests the execution of malicious code, likely an exploit, to achieve initial access.

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` `f410f737d189586a45fa3c9466504e3e3a8697743c0c0828fbba0a183cbf5a4e`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11537 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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