PDF malware analysis — malicious · 52fa15511285ded0

MALICIOUS

PDF

12.5 KB

MD5: 02b3c6102f68d9ebbc2c43ded4d68a76 SHA-1: 957c5de1715a976ef1cd4ac5e3967eafbe6d9a49 SHA-256: 52fa15511285ded09a865058bd80b8c001c2d428bc55ba502262e755995b978e

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file was flagged by multiple high-confidence heuristics, including ML classification and ClamAV detections, indicating it contains malicious content. The presence of embedded JavaScript and PDF-specific exploit signatures strongly suggests it's designed to leverage a vulnerability for code execution. The embedded JavaScript is likely responsible for downloading and executing a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36722 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36722
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` `f5ba9ad900c693d7d2252368cad1dc75e2b11219890eea8c19e3fcf6e9d601bb`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11736 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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