Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd5a5e34377dc5d4…

MALICIOUS

PDF

100.4 KB
MD5: 4ca8914f1aa7a1c58c9e2bca4512d29d SHA-1: 23f96a0930f1f23bdc1b4bcc0a35b4acc990938a SHA-256: dd5a5e34377dc5d4cf621cbf2785eb69fb6f4cf13b1ac15c6e442c76de5fe72d
148 Risk Score

Malware Insights

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

The PDF file utilizes XFA forms and contains an embedded script payload, as indicated by multiple critical heuristic firings including ClamAV detections. The embedded script is likely responsible for delivering the malicious payload. The presence of XFA suggests an exploit targeting Adobe's XML Forms Architecture.

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
90430c9d51b4fb4a421e550100714ae98a1dfd0cb64550d914324e15e753978b
pdf-embedded-script PDF raw stream script payload at offset 0x246 102044 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely