PDF malware analysis — malicious · f6be2a90042d5c6a

MALICIOUS

PDF

12.3 KB

MD5: 90f3430aef33a1c07f9328357e61ce6f SHA-1: 8d287b61d303845cd417dcf97a0b5ddac7065352 SHA-256: f6be2a90042d5c6af5723111127937c5e354e4b8f683a7478c90ff9373680f65

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: 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 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` `523efef3c2d8aeba6d9cdcfae088db5ecb4d075016d38effa83a24ae9e205f8f`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11510 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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