PDF malware analysis — malicious · 0d2fa266a3982a59

MALICIOUS

PDF

6.1 KB Authoring application: Favib rela (via Pipnolpamok)

MD5: 1791fc52e3ce52cc74e8aff596228923 SHA-1: 3f8f54c8a8b27454a83b7702a4981cc2c268bca3 SHA-256: 0d2fa266a3982a597740be0d43e4c7db54ec6ebb46ae9364e9436caa784eede0

166 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains embedded JavaScript which is obfuscated but appears to be designed to download and execute a second-stage payload. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to exploitation of a PDF vulnerability.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36174 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36174
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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_obj0015_000.js` `d2679f3f15d6e025ee8c17fa18b94c5a0f309ff0925fe97138da94e5b5bbdf34`	pdf-javascript-stream	PDF /JS object 15 at offset 0x1281	1504 bytes
Detection ClamAV: Pdf.Exploit.Agent-36174 Obfuscation or payload: unlikely

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