PDF malware analysis — malicious · 4d6bd6708b9e0e78

MALICIOUS

PDF

12.3 KB

MD5: 75a4b067d8fe8bcb3a7ac41ce76d0a14 SHA-1: 994d75a940346382e198a4276af1756605fa8d68 SHA-256: 4d6bd6708b9e0e781b2c743ef2b8b411ae788ca9dbda0a0baab98d971d74d28b

116 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_METADATA_EVAL_STAGER'. The ClamAV detection 'Pdf.Exploit.Dropped-94' strongly suggests this is a malicious PDF exploiting a vulnerability. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for initial access.

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` `2bb3956e25552dac80a1f317083a09b5b9a9c64b63f7323c5bd905b679373507`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2F1B	331 bytes

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