Malicious PDF / .TXT — malware analysis report

Static analysis result for SHA-256 b9488be873359938…

MALICIOUS

PDF / .TXT

3.4 KB
MD5: 4564ff50d174d383e05d01e2a53cb770 SHA-1: af902198777b63a385b5fa9ab6134530a2e4761d SHA-256: b9488be873359938f48c583732acfef147182d7fc63a36b46a600a3c2a304dc2
78 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an XFA form and utilizes ASCII85Decode filters, which are indicators of potential exploits. Specifically, the critical heuristic firing for CVE-2010-0188 confirms the exploitation of a vulnerability in Adobe Reader via an embedded XFA image payload. This indicates the file is designed to achieve arbitrary code execution upon opening in a vulnerable reader.

Heuristics 4

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85
    ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
  • 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_000_off000001e9.bin
cc9a8a8e67bcf9247d9d1e464f18589692df69ed4ae90303d9341d2e53d0652a
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1E9 13469 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).