PDF malware analysis — malicious · e74073df8b6a3dfa

MALICIOUS

PDF

12.8 KB

MD5: b1e51e42da1ffdcfdb59a32ef02ce0ce SHA-1: e7ae00056952b453d0ec0963c29f68baadf98995 SHA-256: e74073df8b6a3dfaa6d6d6801a50f22f2f76b81a902e53aab486f0b9c18dc815

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript within its metadata, which is flagged as a stager for executing exploits. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the 'Dropped' indicator in the ClamAV signature.

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` `1c55fa946995af4d47ce9ff9d0ec00b0529912a2d9973b17b76dcd130f752147`	pdf-javascript-stream	PDF /JS object 76 at offset 0x30FA	331 bytes

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