Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3d2dcb0e500c8c…

MALICIOUS

PDF

4.4 KB
MD5: 9678339130d8dfc893b69cebeb506472 SHA-1: 8386fb21ccd6c3e0ab3b7712729aeba12f17c61b SHA-256: 2b3d2dcb0e500c8c0a2aac722134c2beba5b237ac1accad5dfd911922a3c3295
98 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF and XFA forms. The presence of XFA and ASCIIHexDecode/ASCII85Decode filters further supports this. The embedded artifact 'stream_000_off000001f9.bin' likely contains the exploit payload. The attack pattern is therefore an exploit delivery mechanism targeting Adobe Reader.

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
03696f63c13eb879cb707e452e996b2f8a8ec5ff3a08c5eb9b88e73ba6bbe445
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).