Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8dcb70eef1571d3…

MALICIOUS

PDF

101.8 KB
MD5: 23f09e2f25e22791cc9930dbbf4f6241 SHA-1: 37663ead356ba715ad8137d044f7701cdd4f80ff SHA-256: a8dcb70eef1571d38658cae06a287b867295ff023961203121d7fa7fced043b1
190 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains an XFA form and triggers critical heuristics for CVE-2010-0188, indicating exploitation of a LibTIFF vulnerability in Adobe Reader. An embedded script payload was also detected, suggesting the execution of arbitrary code. The embedded URL is likely benign as it points to the XFA schema. The ClamAV detection further confirms its malicious nature.

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000346.bin
5e21eeba1987e51bc392639bad0c04f296a11e02c5d0cd290ad34a0d6ae51fcd		 pdf-embedded-script PDF raw stream script payload at offset 0x346 103562 bytes

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