PDF malware analysis — malicious · 432a0421c9239c5f

MALICIOUS

PDF

12.2 KB

MD5: 23ba63946a55879fe736640d297dbfe1 SHA-1: 367d816ab329bdbcaa7357ba06a0a1cc6b9c7e1e SHA-256: 432a0421c9239c5f08c50c855eebab1c1a6701eb4b478b34bf581d4a6ebb9273

148 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 with the signature Pdf.Exploit.Dropped-94. High-severity heuristics indicate the presence of a JavaScript stager within the PDF's metadata, designed to decode and execute embedded JavaScript. This JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for initial access.

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` `698c2e9fa910f3ad9a42f2aacd54943aa516b4419cbac76259addc9cbb644fa1`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2EE0	331 bytes

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