Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab3dda134c88be7…

MALICIOUS

PDF

101.9 KB
MD5: 788847ed8f618a168fbbdf49e0d028be SHA-1: 21ce6c717513cd9f4768e82f9d2e6920b4030e72 SHA-256: 9ab3dda134c88be733a1c7ba520eaaabb32851a9936cb2686a79ef991e3c70be
188 Risk Score

Malware Insights

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

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability, which is related to Adobe Reader's handling of XFA forms and LibTIFF. The embedded script payload within the XFA form is likely responsible for executing the exploit. The file is detected by ClamAV as Pdf.Exploit.Agent-6136306-0, indicating a known malicious PDF exploit.

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
051a59d9a32cbfb57813d34a4ca170aa74bd52e050ccc609cdc00a08b43ef236
pdf-embedded-script PDF raw stream script payload at offset 0x346 103635 bytes