Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2bcf6d54e49cbb4…

MALICIOUS

PDF

4.4 KB
MD5: b7d1b5e4dd4ba3d705cb1e1ec1e29bf4 SHA-1: 259d9396f7a7dc7da3a424b3ab313a4a759d5ac3 SHA-256: c2bcf6d54e49cbb480e78fae1d2fab5f7d34c51f1ad08cdcffc85a54ae4f8dc0
98 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an XFA form and triggers the CVE-2010-0188 heuristic, indicating exploitation of a vulnerability in Adobe Reader. The exploit targets a LibTIFF component within XFA forms to execute a payload. The presence of ASCIIHexDecode and ASCII85Decode filters further supports the malicious nature of the PDF.

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
e5e52cbd1e0c819a779d716525faa894e83899f265f06bacf07ae4d17de8a57c
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).