Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4bdca87a6ab9b30…

MALICIOUS

PDF

24.1 KB
MD5: 397664f8b4bc4724f35a2644711962e9 SHA-1: f8383a5fde223297efe0de56dc256e6fb949113b SHA-256: e4bdca87a6ab9b303ffd82de6dd6c07b8967eb9a30ec2760a771e0664338955b
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by ClamAV, specifically flagged as 'Pdf.Exploit.Agent-36821'. Static analysis indicates the presence of an XFA form and a critical vulnerability, CVE-2010-0188, which targets Adobe Reader's LibTIFF handling within XFA content. This suggests the PDF is designed to exploit this vulnerability upon opening, likely leading to the execution of a secondary payload. The embedded URL, while seemingly benign, is part of the XFA template structure and could be involved in the exploit chain.

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/