Malicious PDF — malware analysis report

Static analysis result for SHA-256 21cdefb828bceaee…

MALICIOUS

PDF

4.4 KB
MD5: 87e2bce8809d35ddbd90de82dc8c5a38 SHA-1: 6a193175d38d03de76f4e92978aca24d7695aec3 SHA-256: 21cdefb828bceaeea3f1cf8d2e7a0c786b5f9bdcce81b25804c7c763f31cf6ff
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains an XFA form and triggers the CVE-2010-0188 exploit for Adobe Reader. This exploit is known to be used for delivering secondary payloads. The presence of XFA forms and the specific exploit indicate a malicious document designed to compromise the user's system upon opening.

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
b4a18ada62aa31900f8fa90f94743b59c01aeb535e189443a752580ffd9b86a7
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).