Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b44bd28d9bdff5e…

MALICIOUS

PDF

18.0 KB
MD5: 75840c56098f9a7a76398d83429b2013 SHA-1: 708e9b65b7c42b0c58a93873aa8e6c952acf0298 SHA-256: 4b44bd28d9bdff5eb4adf6b9b60e352a488581caf55d7ebd223e9c56b23505ae
168 Risk Score

Malware Insights

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

The PDF file contains an XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is designed to execute arbitrary code, likely leading to the download and execution of a second-stage payload. The presence of the XFA numeric character-table eval stager further supports the exploitation of XFA-related vulnerabilities.

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-36828 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36828
  • XFA numeric character-table eval stager high PDF_XFA_NUMERIC_EVAL_STAGER
    PDF XFA initialize script reads numeric form data from rawValue, maps the values through a short character table, and evals the reconstructed stage. This is an exploit-kit staging technique even when the final decoded layer remains encoded.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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/

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