Malicious PDF — malware analysis report

Static analysis result for SHA-256 f39f07120ddb2a80…

MALICIOUS

PDF

4.4 KB
MD5: 88dde6774f4fae2f63a57a2893342215 SHA-1: ddf612d963e8be63866be041beec071fee823ea2 SHA-256: f39f07120ddb2a80a2925a2f48be97c695133183c3461cfa92fda755afde5a2c
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 LibTIFF vulnerability in Adobe Reader. The presence of ASCIIHexDecode and ASCII85Decode filters further suggests obfuscation techniques used to hide the exploit payload within the document's stream. The primary attack vector is the exploitation of this known vulnerability.

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
00d11e133db739527c4912d2690ff40e4d4ef9f5c820e88750f1784b61392aed
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).