Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6f4e231c7cc6a5d…

MALICIOUS

PDF

79.1 KB
MD5: 6d65b59f8f14b20877cd88f592c14660 SHA-1: aec25b3d7715fb0d0393453314dcff4bbb721225 SHA-256: e6f4e231c7cc6a5d720c4957188784ba7131eb64ce9f9c631072cd2b36069334
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The PDF file utilizes XFA forms, a known vector for embedding malicious content. Static analysis detected an embedded script payload and ClamAV identified the file as 'Pdf.Exploit.Agent-6136306-0'. An extracted artifact was also flagged by ClamAV as 'Js.Exploit.HTML-29', indicating the embedded script is likely an exploit. The script's purpose is to download and execute a second-stage payload.

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_0000023c.bin
569913e6fe381c7f121ecabcb6de98307d67bd3a1bc459cf84da0b275e14d116		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80285 bytes
Detection
ClamAV: Js.Exploit.HTML-29
Obfuscation or payload: unlikely

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