Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87204db9a3b54c7…

MALICIOUS

PDF

94.1 KB
MD5: 8d97c733ed0ca31fc4765da14c698580 SHA-1: 341a5b5bdb9d62afd6a635a5422d02461313fb50 SHA-256: f87204db9a3b54c7a33efd17b8d57230dd3346184f72490bc6e3e08a48c98483
148 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload within an XFA form, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_XFA heuristics. ClamAV detections confirm its malicious nature, identifying it as Pdf.Exploit.Agent. The embedded script is likely responsible for executing the malicious payload, although its specific actions are not detailed in the provided evidence. The embedded URLs are related to XFA specifications and do not appear to be directly malicious.

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_00000246.bin
e5bc5ea5d11c40673247479b88fe4f2c0b637f1c98125aee47aadf0ecec39adb		 pdf-embedded-script PDF raw stream script payload at offset 0x246 95636 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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