PDF malware analysis — malicious · fa948cc39a0969ac

MALICIOUS

PDF

12.2 KB

MD5: a9a2a04909f6205419d5e8eff8359047 SHA-1: 5bcc87ccb90a8e638f64dca2b731a528f8a51b87 SHA-256: fa948cc39a0969acff0b236e0d65a9d58aad07d1b3fb224269ec35db88f82d39

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 in 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 exploit 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` `21d84a22d3dc14ee823a9fe361f1e8166b554582056d99699f04ad54352c11fe`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11413 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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