Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac073bb45b41ed5…

MALICIOUS

PDF

93.6 KB
MD5: 50c28aef8995ef28ed2c3e5035909dde SHA-1: 79ba42fc045a2d5c9e0872b14051f1572f40dca4 SHA-256: fac073bb45b41ed5410be0528f73c0ef29903c96408a21667876f1a1f1674199
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains an XFA form and an embedded script payload, as indicated by the PDF_XFA and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. ClamAV detections confirm its malicious nature, identifying it as Pdf.Exploit.Agent-6136306-0 and Pdf.Exploit.Agent-36769 on an extracted artifact. The embedded script is likely responsible for delivering the malicious 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_00000246.bin
8e569b500391a2a7830f0dec7c4afd5cfe27fd61de18d0c80f43b878f45d37d5
pdf-embedded-script PDF raw stream script payload at offset 0x246 95096 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely