PDF malware analysis — malicious · 8a1caae75d0bbe39

MALICIOUS

PDF

12.4 KB

MD5: 635405bfed7d45d7f28bafc0392ab45a SHA-1: 9941e14815fb443b58f49c7b97f832b8695280d9 SHA-256: 8a1caae75d0bbe395e7d2fa640896326d5f0c0cccbe62ca3905c2bbf54fc9698

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristics and the presence of an extracted JavaScript file. ClamAV detections like Pdf.Exploit.Agent-36722 and Pdf.Exploit.Pdfka-9 strongly suggest exploitation of a PDF vulnerability. The embedded JavaScript is the most likely mechanism for delivering a secondary payload.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36722 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36722
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` `6e5cecf54562cdab554a2cbd0da2fe0064c683b33e4422333f5df006a30963c0`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11614 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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