PDF malware analysis — malicious · 42633d228b0362b3

MALICIOUS

PDF

12.4 KB

MD5: bf95cb16fa11bab2b4535f5ad90fdc59 SHA-1: dc70accd0850480b9c85967e6faa6ab7b9df29a2 SHA-256: 42633d228b0362b3809a5a6e1e0b99f9ef2afeee60c0e01ba5119bcc7b50f3ce

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

This PDF file was flagged as malicious by multiple engines, including ClamAV which identified it as Pdf.Exploit.Agent-36365. It contains embedded JavaScript, indicated by heuristic firings for PDF_JAVASCRIPT and PDF_JS. The embedded JavaScript file, 'javascript_obj0076_000.js', is likely responsible for executing the exploit, potentially leading to further malicious activity.

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` `1d5d0891e425c5c37a61eac05a8ef35f8c6ceafd2e14701de7862335813ab77f`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11617 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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