PDF malware analysis — malicious · 426971d1d836700a

MALICIOUS

PDF

12.3 KB

MD5: 5b5842ff1768ad0ccd4e0e6b57bbdc03 SHA-1: 81b927beaea25bf066f455d48f8ac10353716e4d SHA-256: 426971d1d836700a4341641779dde9ae6900f95b5ef6f0ffd649499ea295a637

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_METADATA_EVAL_STAGER'. This JavaScript is likely used as a stager to download and execute a secondary payload, as indicated by the 'Pdf.Exploit.Dropped-94' ClamAV detection. The document body content is minimal and does not provide further clues on the specific lure.

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` `7bbbbddb6acb878094cf6a29c6cf16d44ba476ad5f651d8bd6da3fa9a9d1d2d5`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2F1C	331 bytes

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