PDF malware analysis — malicious · 55f02510eac472f8

MALICIOUS

PDF

13.1 KB

MD5: 83f6194718f8d299d600ca2678960aec SHA-1: 1db408d71b3ac0aa9c824124c4d9b2113f7490a2 SHA-256: 55f02510eac472f850a66f7c236a3ef685eacd14814ed11948223bbab2db1dc6

116 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

The PDF contains embedded JavaScript, identified by multiple heuristics including 'PDF_JAVASCRIPT' and 'PDF_JS'. A critical heuristic, 'PDF_METADATA_EVAL_STAGER', indicates that the JavaScript is used to decode and execute further code, a common technique for delivering exploits. The ClamAV detection 'Pdf.Exploit.Dropped-94' further confirms its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a second-stage 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` `96ff3b6f8e30f8fefa379eee7fb35bacc6d5aab114db3f9bcdd6ebd5dbcb9e0b`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3265	331 bytes

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