Malicious PDF — malware analysis report

Static analysis result for SHA-256 2401ab033fd83ba0…

MALICIOUS

PDF

18.1 KB
MD5: 0f7efef1326f1927b4bf42625d7600cc SHA-1: 71bcc27352ba1c4eb7c17a659abe57a6d02e1e28 SHA-256: 2401ab033fd83ba0921aacf375079a5cf7fb0bc7c35c2256d3c98bb547deb2dc
170 Risk Score

Malware Insights

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

The sample is a PDF document that utilizes XFA forms, triggering heuristics related to XFA exploitation. Specifically, the 'CVE_2010_0188' heuristic indicates exploitation of a known vulnerability in Adobe Reader. The 'PDF_XFA_NUMERIC_EVAL_STAGER' heuristic suggests a stager mechanism is present within the XFA content. The embedded URL, while seemingly benign, is part of the XFA structure and could be used in conjunction with the exploit. The ClamAV detection further confirms the malicious nature of the file.

Heuristics 6

  • 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
  • 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/

Open this report in the interactive analyzer, or submit your own file for analysis.