PDF malware analysis — malicious · 26f0b90f24dd33da

MALICIOUS

PDF

12.7 KB

MD5: 5d88f95f9640b6f16f07eab664850906 SHA-1: 8724e8f77a6ccb159abf6d875e14af674e51a85d SHA-256: 26f0b90f24dd33da78d61279d00d4cddd4b3a2f13b12990010f662ea08a196e3

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-94' and the high 'PDF_METADATA_EVAL_STAGER' indicate this PDF is designed to exploit vulnerabilities. The embedded JavaScript, identified by 'PDF_JAVASCRIPT' and 'PDF_JS', is used as a stager, likely to download and execute a secondary payload. The PDF metadata contains JavaScript that decodes and executes further code, a common technique for initial payload delivery.

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` `ede6482bfb40fb55359583a65d73c8eb74b0cca01ff4e02455555010e6f1c412`	pdf-javascript-stream	PDF /JS object 76 at offset 0x30D1	331 bytes

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