PDF malware analysis — malicious · 1f2c7fa093f33c71

MALICIOUS

PDF

12.7 KB

MD5: bf0e8740c7e6d811b8bd0f486428913a SHA-1: cb1dd5e4b2c21d4f051fae912e3354adf73f8e5a SHA-256: 1f2c7fa093f33c710ae62b50146843eb5a7931a726489a48038d07d93101ea55

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious Link: Malicious File

The PDF contains embedded JavaScript, flagged by multiple heuristics including a critical ClamAV detection for Pdf.Exploit.Pdfka-9. The ML classifier also strongly indicates maliciousness. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to execute malicious code.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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` `d46e1a9e63d25a0db814b6e2039bcbb012a2b2dbdf5b438b962ea64faf9b142e`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11857 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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