PDF malware analysis — malicious · 444370d3cb0eb636

MALICIOUS

PDF

12.4 KB

MD5: c1465de31dd16886c264922cef491407 SHA-1: de647d4c6ba92394a606e06385eee0c00d1ba6d1 SHA-256: 444370d3cb0eb636933c08855209182a070a3558c98bb7d34e886fb8684ac8d8

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically indicating an exploit targeting PDF documents. Embedded JavaScript was detected, which is commonly used to download and execute further malicious content. The ML classifier strongly supports a malicious verdict.

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` `bf137fda75815c0a36c2784e82d2d65087573d08ffb881d7805121b9aab6013f`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11637 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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