Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba3e624d1778e8d…

MALICIOUS

PDF

31.4 KB
MD5: f42685883d099c47772b14fd6ac44627 SHA-1: 9b3f1e9082c28cd67c253bf4099168725f75b8fd SHA-256: fba3e624d1778e8da6ca45de7706dd159022635fbbb5bf6f99d93e410f96bf75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.001 Phishing: Spearphishing Attachment

The sample is a PDF file identified as malicious by multiple engines, including ClamAV and a machine learning classifier. It specifically triggers the CVE-2010-0188 exploit related to XFA forms, indicating it's designed to target vulnerabilities in Adobe Reader. The embedded URL, while seemingly benign, is part of the XFA template structure and may be used in conjunction with the exploit. No scripts were extracted, but the exploit itself is the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • 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/