PDF malware analysis — malicious · 35b811f8eb925149

MALICIOUS

PDF

12.5 KB

MD5: 2d544aca8fd7af6a51bf4ba4b2a357f9 SHA-1: a9c1e4a68cab388d1acf388220024b93223b2e10 SHA-256: 35b811f8eb9251492ff04c19689ad6313195adf82ba79f3bb1f21907449a6791

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. This JavaScript is likely responsible for decoding and executing a payload. The ClamAV detection 'Pdf.Exploit.Dropped-94' further confirms its malicious nature. The ML classifier's high score indicates a strong likelihood of malicious intent.

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` `b363d01906c62f11de946ca6a19a26a5e0514de24d2ef03469906474f3134a36`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3002	331 bytes

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