PDF malware analysis — malicious · 42cd4b15e42090bd

MALICIOUS

PDF

12.4 KB

MD5: 3a3cfd7202c3a4a3c37790870d3b3ff2 SHA-1: 4b6521f04628451d0f67efdea39dcfb8d826f096 SHA-256: 42cd4b15e42090bdcba083cb0bce4de7cab9f8107d7dec0c1c1811a81a33f907

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF JavaScript actions and streams. ClamAV detections confirm the malicious nature of the file, specifically identifying it as a PDF exploit. The embedded JavaScript is likely responsible for executing the exploit, leading to the malicious behavior.

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` `de0770382121f13627a32a7134e41b8eb992f0782f945e75305030e418f08e0c`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11591 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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