PDF malware analysis — malicious · 7888b4d11df3b116

MALICIOUS

PDF

25.2 KB Created: 2011-72-51 03:25:00

MD5: d707ca1c2aa6605e0e79df70869e0f47 SHA-1: 139bdc655489c9fc5cfc259abdf2563043c26245 SHA-256: 7888b4d11df3b116dc79ffd58a6f19c516e29041c3d6a728b89b0d9df1844251

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics and a machine learning classifier as malicious. The JavaScript appears to be obfuscated but likely attempts to download and execute a second-stage payload, as indicated by the ClamAV detection name 'Pdf.Exploit.Agent-36199'. The embedded JavaScript is the primary indicator of malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36199 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36199
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_obj0001_000.js` `d114e5d7825f81ad1e070073fb986365f644318874685b02d53dc636cdde1ae6`	pdf-javascript-stream	PDF /JS object 1 at offset 0x621A	443 bytes

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