PDF malware analysis — malicious · 59b2a3145dc87db6

MALICIOUS

PDF

13.2 KB

MD5: d035e2e57f9d5fd6d2740eeae68e85a1 SHA-1: 31b41f4971bb2168c9850fe7f107b5809ecba1a6 SHA-256: 59b2a3145dc87db6004ea1392b9763853952c3ae70bae8932e747319dec8a5e9

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript within its metadata, identified as a stager. This JavaScript is likely designed to decode and execute further malicious code, leading to the download of a secondary payload. The ClamAV detection of 'Pdf.Exploit.Dropped-94' further supports its malicious nature as an exploit-based dropper.

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` `fe1e194b7e002df2227464eede76e3c470a35402fecd10149c37a5a9a66fa016`	pdf-javascript-stream	PDF /JS object 76 at offset 0x32D8	331 bytes

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