Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3661bcf0d891e2…

MALICIOUS

PDF

93.4 KB
MD5: 5932034aa4919ac49c8683c059e17529 SHA-1: 7e456ed52508eb75ff1d4037a6918ecf8c7cf1e9 SHA-256: fa3661bcf0d891e262bdb7de223c987671b2e61ba598f319d2c365a3e562722e
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-6136306-0, indicating it contains an exploit. The presence of an XFA form and an embedded script payload further supports this. The embedded script is likely responsible for executing the exploit, although its specific actions are not detailed in the provided evidence. The embedded URLs are not directly indicative of malicious activity but are included as potential indicators.

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
061e8ec3f45ce4c732e11a962aef5ee91d12249cec260fca946117fe7fa2c7ad		 pdf-embedded-script PDF raw stream script payload at offset 0x246 94922 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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