PDF malware analysis — malicious · 980504e7f7582652

MALICIOUS

PDF

12.3 KB

MD5: a105f2b152cede166a2a04a7523af49d SHA-1: d437e4c9513c05efa06754113ed4afb5bbe34d2f SHA-256: 980504e7f7582652966f56bde82720708f12b8f5315dc7814c97ff1bd80923a0

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution

The PDF file contains embedded JavaScript, which is a common technique for exploiting vulnerabilities in PDF readers. The ML classifier and ClamAV detections strongly indicate malicious intent. The embedded JavaScript is likely responsible for executing a second-stage payload, although its specific actions are not detailed here.

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` `7175e983eeb81ae6c07eda489bcb2d0b59c4b5138ab1f3aecad906159bf6d7f4`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11493 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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