Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d06dc540ae33e1…

MALICIOUS

PDF

24.1 KB
MD5: f55528e5a3e8df65875c67146122035d SHA-1: accad44aaa439e177c119969d3f2bc88d8914fa5 SHA-256: 89d06dc540ae33e190d6287565489ae7c2451d25a578ecefba01d74076d27151
130 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 exploit targeting Adobe Reader's XFA form processing. This exploit is known to facilitate arbitrary code execution. The embedded URL, while seemingly benign, is part of the XFA template structure and may be used in conjunction with the exploit. The heuristic firings strongly indicate exploitation, and the ClamAV detection confirms its malicious nature. The script content appears to be obfuscated XFA JavaScript, likely intended to download and execute a second-stage payload.

Heuristics 5

  • 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.
  • ClamAV: Pdf.Exploit.Agent-36821 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36821
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/