PDF malware analysis — malicious · d8a2ec103b9a5b05

MALICIOUS

PDF

12.4 KB

MD5: 25b40872260925dbde6b25c900b0e2d6 SHA-1: 6a70aa25c29fc4bfe62bde8f5c0cb98301f52cfb SHA-256: d8a2ec103b9a5b05beb358a86345eb2e9fc18798cf99746ef2484e687aead725

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, identified by multiple heuristics as a stager within the document's metadata. This JavaScript is designed to execute and likely download a secondary payload, as indicated by the ClamAV detection name 'Pdf.Exploit.Dropped-94'. The ML classifier strongly supports the malicious nature of the file.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
PDF metadata JavaScript eval stager high PDF_METADATA_EVAL_STAGER

PDF JavaScript reads document metadata fields such as title, subject, or producer, decodes character data with parseInt/String.fromCharCode style helpers, and evals the recovered stage. This is a high-signal exploit-kit staging pattern.
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` `9df4750ef6bd5d3be241cfaf02b6e960d530f888552866ee7a52cc5872360b35`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2F4A	331 bytes

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