PDF malware analysis — malicious · 8edc3b2917adc711

MALICIOUS

PDF

12.4 KB

MD5: 4dd5e3de0c68d0beb74707bc6f49344a SHA-1: d14dfdb5c0f5afbc6f57284556923555f0b5fd3c SHA-256: 8edc3b2917adc711b6a1e578e656f3fba31baf25e91fec9aae4a153b420fddfa

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detected this as Pdf.Exploit.Pdfka-9, suggesting it exploits a known PDF vulnerability. The embedded JavaScript is likely designed to download and execute a secondary payload, which is a common technique for initial access.

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` `6e485ff83d7bf4ae2af0ace52e5635cb0d94ae141f9007b330962b7a1807f989`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11612 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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