PDF malware analysis — malicious · e863200423a2c35e

MALICIOUS

PDF

12.4 KB

MD5: 15b1ae1f58296b17011c6543eeb6a5b7 SHA-1: efc5319421bf92ad1b3d38737e19a2e5498a687f SHA-256: e863200423a2c35e146a94b9e1bc4fa3809114eb020d46b99dd462cf718151e8

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF document contains embedded JavaScript, flagged by multiple heuristics as a stager for executing malicious code. The critical ClamAV detection 'Pdf.Exploit.Dropped-94' indicates this is a known malicious PDF exploit. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `382ec0f8b8c09feb71ae828e77217f59db40bcb6281fe8ca73c91e7d4b52adf6`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2FAB	331 bytes

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