PDF malware analysis — malicious · 8b0daebab789edf2

MALICIOUS

PDF

12.6 KB

MD5: 1362998ddcee78a214eb3e9531bce4bf SHA-1: cf8cc8208be89a5f71b8c606106f2e3a52ebac9a SHA-256: 8b0daebab789edf26eae6a181e2a51a5e3ba76e14dcf9f3439fe991e4a96b019

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'. Heuristics indicate the presence of JavaScript within the PDF's metadata, likely used as a stager to download and execute a secondary payload. The embedded JavaScript object, although not fully detailed here, is the primary mechanism for this malicious activity.

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` `319e71094c5bad67f56c011fafe001eaba80a7c55026d49a3e59bb95bba166b2`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3075	331 bytes

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