PDF malware analysis — malicious · d2b9b45c22e09cce

MALICIOUS

PDF

12.3 KB

MD5: 4049b2f31637830cf2c23c784858e167 SHA-1: e6f475d992437adb89257ef02483764090576c0d SHA-256: d2b9b45c22e09ccedae9f215518a5b24a7143c84a73bb7224d0955a7c39992da

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including 'PDF_JAVASCRIPT' and 'PDF_JS'. A critical heuristic, 'PDF_METADATA_EVAL_STAGER', indicates that the JavaScript in the metadata is used as a stager. ClamAV also detected this as 'Pdf.Exploit.Dropped-94', confirming its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a secondary payload.

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` `26533ca724dc82fcd13fb53748bc3ce436d83a9ead0fdee2d4365bd82a5c8870`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2F13	331 bytes

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