PDF malware analysis — malicious · 3a935ab6b0c679d9

MALICIOUS

PDF

12.3 KB

MD5: 003f5bb5dd24eca1cdc3ad88a576b9c6 SHA-1: 4a74a4a8e31ae52c70deed2817da0e90e974e679 SHA-256: 3a935ab6b0c679d973640e191ca34aeaeb441f7d55d9f5e72b56d0a7921cefa6

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-94'. The presence of embedded JavaScript, specifically a metadata eval stager, indicates an attempt to execute malicious code. This code likely functions as a stager to download and execute 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` `bb7e8a7a8e5758bb0d0ddae41757e9916f9579a113f547a6b4affab4cc3885ad`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2F34	331 bytes

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