PDF malware analysis — malicious · 56d9860f5e712a08

MALICIOUS

PDF

12.8 KB

MD5: 10434ddcb3bac25a64a16afa1677d074 SHA-1: b1fb642d4acf52a5174ba7d73082527146662719 SHA-256: 56d9860f5e712a08065871b277d7d69c31c62c35d295807fb2fd9a563543eb90

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

This PDF file was flagged as malicious by ML classifiers and ClamAV with the signature Pdf.Exploit.Dropped-94. It contains embedded JavaScript, including a stager within the PDF metadata that likely decodes and executes further malicious code. The primary attack pattern involves leveraging PDF vulnerabilities to download and execute a second-stage payload.

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` `cb6deef172c5ecde9855142a5f253938ce6e65164090525d026ce37f177f31b1`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3102	331 bytes

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