PDF malware analysis — malicious · b39391a3c36b5dcb

MALICIOUS

PDF

12.8 KB

MD5: d72da305517a7122a193da72db1bca98 SHA-1: e772f664939076be52124d01ea54780ffe9164ff SHA-256: b39391a3c36b5dcb88d731adc01c1ed2283198020ef900573bfa5f4af5f09030

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

This PDF file was flagged as malicious by ML classifiers and ClamAV, specifically as 'Pdf.Exploit.Dropped-94'. It contains embedded JavaScript, including a stager within the PDF metadata, which is indicative of an exploit attempt. The primary function appears to be downloading and executing a second-stage payload, though the specific URL or execution method is not directly extractable from the provided metadata and script content.

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` `2aaecef6f8ee02c4326e7cc7a4081ac6dad2b4c62ddc37d27981869c5da58378`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3101	331 bytes

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