PDF malware analysis — malicious · e61f0f2c21bd950e

MALICIOUS

PDF

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

MD5: 07846a9f2093a6366b9e052b7139fc05 SHA-1: 1edb13e825615436bfee39bf3ad3688461f4b2c3 SHA-256: e61f0f2c21bd950ee14d4c8efc4b36514313fb4ba4b9df731a5fe5160f3204aa

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF document identified as malicious by ClamAV (Pdf.Exploit.Dropped-94) and a machine learning classifier. It contains embedded JavaScript, indicated by heuristic firings for PDF_JAVASCRIPT and PDF_JS. This JavaScript is likely responsible for exploiting a PDF vulnerability to download and execute a secondary payload, a common technique for initial access.

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` `a834d2361d3cbf1e37688ebc163743f58c98aaa99b59568855b02a3f9e77770e`	pdf-javascript-stream	PDF /JS object 76 at offset 0x94B	50488 bytes

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