Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c5ee02f20358fe3…

MALICIOUS

PDF

4.4 KB
MD5: f0bdf383433ec9028bdfee9ae739bb54 SHA-1: be9a4357604ece7e880fb262769c8c4c5dff46fb SHA-256: 1c5ee02f20358fe3c33d374f50d733dfaa6098a5d13c78c3c1ed032f81f978e2
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 a critical heuristic for the CVE-2010-0188 exploit, indicating it targets a vulnerability in Adobe Reader related to LibTIFF. The exploit is embedded within an XFA image/tif payload. Additional heuristics for ASCIIHexDecode and ASCII85Decode filters suggest obfuscation techniques were used to hide the malicious content.

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_off000001f9.bin
f5b086a82a8df6646e4809b20b15115da490f7c219c81070bbb10e00c0600824
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1F9 13469 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).