Malicious PDF — malware analysis report

Static analysis result for SHA-256 34dd2df77c35d3b4…

MALICIOUS

PDF

24.1 KB
MD5: d508d9b8f0df5856eca3c44206646115 SHA-1: a8ca1e09d380d82a0c0fd8d74d5c7a204eb725f2 SHA-256: 34dd2df77c35d3b41427ad15b188a5dfe0124cdc991530f89707da0be57b791a
130 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by ClamAV, specifically flagging it as 'Pdf.Exploit.Agent-36821'. Static analysis detected the use of XFA forms and a critical vulnerability, CVE-2010-0188, related to LibTIFF exploitation within XFA content. The embedded URL, though obfuscated, points to an XFA schema resource. The script content, while heavily obfuscated, appears to be JavaScript intended to exploit this vulnerability, likely for the purpose of downloading and executing 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/