Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca554627688ceefc…

MALICIOUS

PDF

12.5 KB
MD5: 851896e8356ada4e8175fcd543b18717 SHA-1: 007eaab3a2ccab75cc2624bfb81af94c7e5f13de SHA-256: ca554627688ceefc25645d3798ce4d55e09a01c5aa08e9feac38ea6c0f2e19af
76 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link

The PDF file contains embedded JavaScript, which is a common technique for exploiting vulnerabilities in PDF readers. ClamAV detected this as Pdf.Exploit.Pdfka-9, indicating a known exploit. The embedded JavaScript is likely responsible for executing the malicious payload.

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.

FilenameKindSourceSize
javascript_obj0076_000.js
d6244e9add82caf557119a025de262924f308436eb62e8b8a2ac71654f59d737		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11736 bytes
Detection
ClamAV: Pdf.Exploit.Pdfka-9
Obfuscation or payload: unlikely

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