Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb33a6a2a1ddc764…

MALICIOUS

PDF

24.1 KB
MD5: c9138b2fdbb406d82cfffe46fddcc922 SHA-1: ad995af0b2683bf87eb35422e3372a23863cdd3c SHA-256: fb33a6a2a1ddc76489b47b689b5268b4bcaafc2fc62a1bc173142e6d0e7d33f3
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The sample is a PDF file that contains an embedded XFA form, which is known to be exploited by CVE-2010-0188. The heuristic firings indicate a critical vulnerability related to Adobe Reader and XFA exploitation. The embedded URL is likely part of the exploit chain. The file is detected by ClamAV as Pdf.Exploit.Agent-36821.

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/