PDF malware analysis — malicious · f8aa40ed734d7d5f

MALICIOUS

PDF

12.4 KB

MD5: 04c0a41e009fbf6d0323fe8bb45d294f SHA-1: 731d2120a6d3383a11455fec1923150090bbbedf SHA-256: f8aa40ed734d7d5fd0897aa6f6d81f4288ab1f7623caf2f5671cf6e21ea32e35

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF contains embedded JavaScript, which is a common technique for exploiting vulnerabilities within PDF readers. ClamAV detections indicate this is a known exploit, likely Pdf.Exploit.Agent-36365. The embedded JavaScript is the primary mechanism for delivering the malicious payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36365 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36365
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_obj0076_000.js` `870df180ca53da522bde9eff3249a07d748b784a75536fe7dbdfde0110fbbaae`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11581 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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