Malicious PDF — malware analysis report

Static analysis result for SHA-256 b834239240a164a9…

MALICIOUS

PDF

4.4 KB
MD5: ebaf21889953e98325cb8df59000b7d5 SHA-1: 10c3e59d0f20427632ced421acd6f1b89e988985 SHA-256: b834239240a164a9fde4918337e07dd1212456fef969a1e06545262a5b3f1d4b
98 Risk Score

Malware Insights

The PDF file contains an XFA form and triggers the CVE-2010-0188 exploit for Adobe Reader, indicating it's designed to deliver a malicious payload. The exploit targets a vulnerability in LibTIFF processing within Adobe Reader's XFA forms. The presence of ASCIIHexDecode and ASCII85Decode filters further suggests obfuscation of malicious content. The extracted artifact 'stream_000_off00000207.bin' likely contains the exploit code or a secondary stage.

Heuristics 5

  • 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.
  • ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX
    Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
  • 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_off00000207.bin
a8f15bd85020d0900399a4b439a56ea8a4ede568acf46eb12c3ab30bfce15192
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x207 13469 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).