PDF malware analysis — malicious · 90041f482e57cb51

MALICIOUS

PDF

12.5 KB

MD5: bdfff91fcad8f38808f1e09714e00b9b SHA-1: ff7bd7ad3be0bcd42b623b3c9890c15db1bedf28 SHA-256: 90041f482e57cb5109abfb08e97577465e4cf69cebd8f9a9d4b8fc9bc1dc3f75

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

This PDF file was flagged as malicious by multiple engines, including ClamAV which identified it as Pdf.Exploit.Agent-36365. The presence of embedded JavaScript, detected by PDF_JAVASCRIPT and PDF_JS heuristics, indicates an attempt to execute malicious code. The ML classifier's high score further supports the malicious nature of the file, likely leveraging an exploit to achieve code execution.

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` `20f96afd0621c43de101e3af02841c93b4be35bd69a60718be5f5ffc336c5722`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11685 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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