PDF malware analysis — malicious · 305be2e275a14be8

MALICIOUS

PDF

12.7 KB

MD5: ac6077bc41460ab76d701f37c11aa457 SHA-1: fada722351b0649d47cd3072251f4053e8b066af SHA-256: 305be2e275a14be86ffebb321f9b81b699fedbd69f0ba54a05ded01a3cf57944

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link

The critical ClamAV heuristic 'Pdf.Exploit.Pdfka-9' and the high ML classifier score strongly indicate malicious intent. The presence of embedded JavaScript, identified by PDF_JAVASCRIPT and PDF_JS heuristics, suggests the PDF is designed to execute malicious code, likely to download and run a secondary payload.

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` `751bef38242c10b9cbd5573f9cde8e819f2b2839cbd4d099ed1d5e7b5775c07c`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11918 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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