PDF malware analysis — malicious · 3d4155c431ecbec6

MALICIOUS

PDF

12.9 KB

MD5: 649efaccf2b5f61718489d4ec8df97bb SHA-1: 11f708f5bac29eaee97c0bf5a160c2221581e3d6 SHA-256: 3d4155c431ecbec6fd82e64db46e3d6e0924d00163850084e1071070605e66d8

116 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-94' and the 'PDF_METADATA_EVAL_STAGER' heuristic indicate that this PDF contains JavaScript within its metadata designed to execute an exploit. This JavaScript likely acts as a stager to download and execute a secondary payload. The embedded JavaScript stream further supports this conclusion. The file type and heuristics strongly suggest a malicious PDF dropper.

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` `9bef3a35245a706fd8f3b5c5031ce14133268d6a3f37fdfcd94df2dd1dacc24e`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3191	331 bytes

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