Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae59a543a3b9624a…

MALICIOUS

PDF

20.2 KB
MD5: a6e68844099073a08025fb665b55f139 SHA-1: 95e4c555f71916d548e46dc56a3e6c1c481317cd SHA-256: ae59a543a3b9624aef4abe3de3ec5ecf03b822b4248b22bcbef63b41f1d3ecb3
130 Risk Score

Malware Insights

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

The sample is a PDF file that contains an XFA form, which is known to be a vector for exploits. Specifically, the 'CVE_2010_0188' heuristic indicates a LibTIFF XFA image exploit targeting CVE-2010-0188. ClamAV also detected this file as 'Pdf.Exploit.Agent-36826'. The embedded URL is likely part of the exploit chain or a lure. The obfuscated JavaScript in the DOC BODY section, when decoded, appears to be part of the exploit's payload execution.

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-36826 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36826
  • 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/