PDF malware analysis — malicious · 545f2d30fc7e1fd7

MALICIOUS

PDF

12.7 KB

MD5: cf1a0bc5a09b4111559f0d64de0bd42e SHA-1: 22197d5239841c8f22aade0b3a0bdd7d37a0fcd7 SHA-256: 545f2d30fc7e1fd79b756f2d9b667ef22fe79dfbc9550899ca6fb9aba6efb79d

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, which identified it as Pdf.Exploit.Dropped-94. High-severity heuristics indicate the presence of a JavaScript eval stager within the PDF's metadata, designed to decode and execute embedded JavaScript. This script likely acts as a downloader for a secondary payload, contributing to the overall malicious nature of the document.

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` `961718dd985ed41d633e6ee4ffdc85c5608507f96e99defd0d14f1e7e64aa510`	pdf-javascript-stream	PDF /JS object 76 at offset 0x309E	331 bytes

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