PDF malware analysis — malicious · 4618bd309a005963

MALICIOUS

PDF

12.9 KB

MD5: d31ecfc57d7bcfe37c173ecbff4aac65 SHA-1: e2b1c388bbd6c26d5e19424ccead5aaac7259440 SHA-256: 4618bd309a005963ca0058940a01cd44e5c492da3e7fff11461efb0849b84e03

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 executing malicious code. The ClamAV detection 'Pdf.Exploit.Dropped-94' strongly indicates it's a known exploit dropper. The ML classifier's high score further supports its malicious nature. The primary attack pattern involves leveraging PDF vulnerabilities to execute JavaScript, likely to download and run 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` `fde8bd86299dde6d7959285432d5f1436f22ee9c473b8f1273f91c704844b1f1`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3153	331 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.