Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd7d6f279fc98031…

MALICIOUS

PDF

14.4 KB
MD5: 0e7e051e272ced96b47e27b525b6881b SHA-1: f016bd7be8f6275e35f74ddf1446fb2f5298d4d8 SHA-256: dd7d6f279fc980311d85d1ddcf6cc00c8ad5c1b7ed58e8f626a768542eb1745f
168 Risk Score

Malware Insights

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

The sample is a PDF file that leverages XFA forms to exploit CVE-2010-0188 in Adobe Reader. The XFA numeric evaluation stager and ClamAV detection (Js.Exploit.HTML-30) indicate the presence of a JavaScript exploit. This exploit likely downloads and executes a second-stage payload, as suggested by the embedded URL.

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 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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