Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed65ea4836749eb8…

MALICIOUS

PDF

79.1 KB
MD5: 9366bfd0be9cdab6bcbc14718d82742a SHA-1: 4d207d497f2968bbec10ece7de2f2256f091e5fd SHA-256: ed65ea4836749eb813d7668269d7aa816f5d7191d0772f150ead556458d57dc2
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an embedded script payload and triggers ClamAV detections for PDF exploits and JavaScript exploits. The presence of XFA form elements and embedded scripts suggests an attempt to leverage PDF vulnerabilities for code execution. The embedded artifact 'Js.Exploit.HTML-29' indicates a JavaScript exploit is likely being used to deliver a secondary 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
ade20f54d9973aef1e6a4b6bfdf36d11acd24729059ac7261f8dd19c3d1917fd		 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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