Malicious PDF — malware analysis report

Static analysis result for SHA-256 a042ebd58c711675…

MALICIOUS

PDF

14.2 KB
MD5: 53aa664c59054ce99fac94b1c52098a5 SHA-1: 877ee17b8fadf122b85eea84187a7ba582be2341 SHA-256: a042ebd58c711675336b5d2e2e9959582773f8d6ecc179415e0d765b6a9a1e5c
130 Risk Score

Malware Insights

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

The sample is a PDF file that triggers a critical heuristic for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. It also triggered a ClamAV detection for Js.Exploit.HTML-30, indicating embedded JavaScript exploit code. The presence of an embedded URL, though benign in reputation, further supports the malicious nature. The attack pattern is likely a user execution of a malicious PDF exploiting a known vulnerability.

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/