PDF malware analysis — malicious · d569a7c81d14523e

MALICIOUS

PDF

12.3 KB

MD5: d2d69e4c7a485351cc858483e90daaa9 SHA-1: d9da48a538c89a4a1b7327f458f74b998d0ab740 SHA-256: d569a7c81d14523e26d190a6a7007ea0a9378f3146e303f60634c078b4038945

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript, flagged by multiple heuristics as malicious. The 'PDF_METADATA_EVAL_STAGER' heuristic indicates that JavaScript within the PDF's metadata is used to decode and execute further code. ClamAV detection 'Pdf.Exploit.Dropped-94' further confirms its malicious nature. The ML classifier also strongly indicates maliciousness. The exact exploit or payload is not detailed, but the presence of JavaScript points to code execution for delivering a secondary 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` `fd086a1a8561ca97a33b25eec1b8c9768d2aded13e1bcdcd493b2313619dcdca`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2F02	331 bytes

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