Malicious PDF — malware analysis report

Static analysis result for SHA-256 b427de45ff72bddb…

MALICIOUS

PDF

2.6 KB
MD5: c651f373d1a8384ec1d2ef647ff6bac0 SHA-1: 58eba9e7c397b32bd26d71be5ae401f8ef6f22c1 SHA-256: b427de45ff72bddb8e7aac47d4189f0670515a3f3913f0418b4d3bba94d93580
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 User Execution: Malicious File T1559.001 Component Object Model Hijacking

The PDF file contains an embedded malicious object, identified by ClamAV as Pdf.Exploit.Dropped-90. Static analysis indicates a critical vulnerability exploit for CVE-2010-0188, targeting Adobe Reader's handling of XFA images. This suggests the document is designed to be opened by a vulnerable PDF reader to execute an embedded payload.

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.
  • ClamAV: Pdf.Exploit.Dropped-90 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-90
  • 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
  • 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
873c6ba6f63667230f6f72076c71efeefd9805be964dff4c638df9642ade5772
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x5D 13415 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).