PDF malware analysis — malicious · 3a61be12eac469d0

MALICIOUS

PDF

13.1 KB

MD5: 00714f4f77fa2aa3c0f063abe33df35d SHA-1: 627c88f2ef768c7e7d0b3cd47db8529ddd1592da SHA-256: 3a61be12eac469d0c63179cd95a0411258eeca20b57b5905ea3ae03cbed1c12e

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

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

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` `329f4adca299eb69505f36337f0093cfd02735e9122147b5ae37cbc411ba58b3`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3227	331 bytes

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