Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff9de3da2d71ce7…

MALICIOUS

PDF

12.2 KB
MD5: 5d1147a427be0e6a5ba6187c3bb29c0c SHA-1: 7b512ebe95699123b6ec8ff1c287bb676623b8b5 SHA-256: 1ff9de3da2d71ce7fc2725c3e48b8a653f965e228e547f15e648fbd488d5fab4
76 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings. ClamAV detected this artifact as 'Pdf.Exploit.Pdfka-9', suggesting it exploits a known PDF vulnerability. The embedded JavaScript is likely responsible for executing a 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
7254bc0af095325c00f594ed4cb721ab0794f709517ba9ee4428b223ab0a3b5d		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11435 bytes
Detection
ClamAV: Pdf.Exploit.Pdfka-9
Obfuscation or payload: unlikely

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