Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d2df299d91324b4…

MALICIOUS

PDF

4.4 KB
MD5: e6085b77a32214ded559f8fd1ec0e315 SHA-1: 808e26a0885901861b85a25b044bf508ff2186e1 SHA-256: 4d2df299d91324b49665214ae5260201f0f0cc9df10f4df8b3e5203386baf5cb
98 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1027 Obfuscated Files or Information

The PDF file contains an XFA form and triggers the CVE-2010-0188 heuristic, indicating exploitation of a vulnerability in Adobe Reader related to LibTIFF and XFA images. The presence of ASCIIHexDecode and ASCII85Decode filters further suggests obfuscation techniques used to hide the exploit payload. The extracted artifact 'stream_000_off00000207.bin' is likely the decompressed exploit code.

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
3b7e2f3e28b181c673bdb6253c83381af4027c1f72e33bad30be2a19a71cdc25
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).