Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8529eec21dfd071…

MALICIOUS

PDF

94.2 KB
MD5: 5c15edf1d47f5599440a562f305b65c4 SHA-1: 25019f9f647de33463c3bdb03a0fc3ec533a5bcc SHA-256: c8529eec21dfd071b70ac649846463033ae82585bfb8ff1c7b738a37e8c3db6c
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 XFA form and an embedded script payload, strongly indicating malicious intent. ClamAV detections confirm this, identifying it as Pdf.Exploit.Agent. The embedded script is likely responsible for executing the malicious payload, although its exact function cannot be determined due to obfuscation. The presence of XFA forms is a common vector for PDF exploits.

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
1a108778d138eaa534f587f00964e3c89f2a2d7fb580621d45bc47a545077d14		 pdf-embedded-script PDF raw stream script payload at offset 0x246 95740 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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