PDF malware analysis — malicious · 33cfe0dcabc8eeae

MALICIOUS

PDF

11.8 KB

MD5: 4852a0ccdfb63548f91d4ffaeec3fbff SHA-1: 6b82e4bdb853f971f77bf869c393040b866a617f SHA-256: 33cfe0dcabc8eeae49f3c1a14ae3d08469c694f5d833d68ab1e979ff57d5dd02

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified by multiple heuristics including a critical ClamAV detection for 'Pdf.Exploit.Dropped-94'. The JavaScript is likely used as a stager to download and execute a secondary payload, a common technique for initial access. The PDF metadata also contains JavaScript, further indicating an exploit attempt.

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` `eb9dd5d7b0df7b4fcd67063a1a2992fd9faf628ec94e0655d393924b070148cb`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2D37	331 bytes

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