Malicious PDF — malware analysis report

Static analysis result for SHA-256 c51e32df16b2f464…

MALICIOUS

PDF

82.7 KB
MD5: 3ef77bdfbb84f6dc65b640766aa89749 SHA-1: 6b7f7e1e5261741e0ee0b84d2a4a39a5cb8447ab SHA-256: c51e32df16b2f4640627a2f56c523e1067747da08dc86514a542e947c1a5740e
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious PDF T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains an embedded script payload and utilizes XFA forms, indicating a malicious intent. ClamAV detections further confirm its malicious nature, identifying it as Pdf.Exploit.Agent. The embedded script is likely responsible for delivering the secondary payload, though its exact function is obscured by the PDF structure. The presence of XFA suggests an exploit targeting PDF reader vulnerabilities.

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
618c66260b1872f455ed0730ec4662b7e2fe71845dd69b4d2f1f642d6509c1a9		 pdf-embedded-script PDF raw stream script payload at offset 0x246 83927 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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