Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3a8debcb1239fc…

MALICIOUS

PDF

2.6 KB
MD5: e85cb556c55b2924c1b19008c4b9600f SHA-1: 104ef1c426c9be9d0b9b3ecfd3dc2d26403a8e52 SHA-256: db3a8debcb1239fc2723d79fb51663ad433c4b7dcbe86469d100d040534ae219
140 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an embedded XFA form with a malicious TIFF image payload, triggering the CVE-2010-0188 exploit. This exploit is designed to execute arbitrary code, likely leading to the download and execution of a second-stage payload, as indicated by the ClamAV detection signature 'Pdf.Exploit.Dropped-90'. The embedded file 'embedded_file_obj0001.bin' is the artifact dropped by the exploit.

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
835c0835f0fc0c6ae30ba6d7ee3b2a1f6df88d6a3108408df5d300ab5b63aa22
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x5D 13473 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).