PDF malware analysis — malicious · 9ef3f868d30412b4

MALICIOUS

PDF

58.9 KB Created: 2006-02-16 15:03:51 -08:00 Authoring application: lice (via ubst)

MD5: 0709a0da79362b2fc0cf2b2bd2f49fd7 SHA-1: 412838ecb7aa38ef84cf7f7051a15a855989b019 SHA-256: 9ef3f868d30412b43f3b4d178f766ebba55a7246ba2f19e5221cca2d53511d1a

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is identified as a malicious PDF by ClamAV and a machine learning classifier. It contains embedded JavaScript, which is a common technique for exploiting vulnerabilities in PDF readers. The presence of JavaScript actions and embedded JS streams strongly suggests that the script is intended to download and execute a second-stage payload, although the specific script content was not provided for detailed analysis. The ML classifier's high confidence score further supports the malicious nature of the file.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
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` `414f344c723964e7fce70708798cbb31faf574f69eeb5b24c1fc2475667f37a5`	pdf-javascript-stream	PDF /JS object 76 at offset 0x94B	50403 bytes

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