Malicious PDF — malware analysis report

Static analysis result for SHA-256 422a363b058a38df…

MALICIOUS

PDF

79.1 KB
MD5: 7c4ca7060c4b56ed222205c1a3a55677 SHA-1: 8fbee0b550ff401b0721a947b739cbe2486213bb SHA-256: 422a363b058a38df04ecb96a82f9dad9b5e13d9e5cd3f5be7d0ae32c4996f847
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF document contains an embedded script payload and triggers XFA form heuristics, indicating it's designed to exploit PDF vulnerabilities. ClamAV detections confirm its malicious nature, identifying it as Pdf.Exploit.Agent-6136306-0 and Pdf.Exploit.Agent-36769 on an extracted artifact. The embedded script is likely responsible for executing the exploit, though its specific actions are not detailed in the provided evidence.

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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.
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000023e.bin
36d4603da9dccc49e724695b0005e6d2a9a26ca830eb296cbc36165ac4b5b34b		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80299 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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