Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c3e5e83e8b4b720…

MALICIOUS

PDF

140.3 KB
MD5: 18e32301d57b37ed298c290502bc2744 SHA-1: d1a5b9a16b123d3b41f8f2e5c99ebaa4acdaf335 SHA-256: 4c3e5e83e8b4b72084d460920a3107d036db95a73af029dc6201fa8c000edaaf
80 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an embedded exploit targeting CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF processing. This indicates the document is designed to execute malicious code upon opening. The embedded file artifact further supports the presence of a secondary payload. No scripts were extracted, and the document body was heavily obfuscated, preventing a more detailed analysis of the ultimate goal.

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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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
embedded_file_obj0001.bin
5cef019c1335cf413c3b764f8bf6d3d305a45c6872e36866b22ef0163fce9c50
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x51 13430 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).