Malicious PDF — malware analysis report

Static analysis result for SHA-256 a84139e8d103656e…

MALICIOUS

PDF

5.5 KB Created: qHFdTlfA Authoring application: gfhersdd
MD5: ccf493b0c875a8d6bdb7b8695498e8ad SHA-1: 180df3261cc40694adef811cc0ae6b4258bbe44b SHA-256: a84139e8d103656e225726c1a314f186af0ab50b47bebef59c0d57d4340e9fff
80 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an embedded stream that triggers the CVE-2010-0188 exploit, targeting a vulnerability in Adobe Reader's handling of LibTIFF XFA images. This exploit allows for arbitrary code execution. No document body text was available for further analysis, but the critical heuristic firing strongly indicates exploitation.

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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000002e7.bin
f5b7e790a8fb1c9c63e2c09e39e78a855944461360cddfc73f5ca7830ba6e5ad
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E7 59504 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).