Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c4bbe0ab307e4a1…

MALICIOUS

PDF

2.6 KB
MD5: ba7a16902d5c3e12472d336bbd23b66c SHA-1: 40ccc3221828d023cd9482ff2af517f584de2a5d SHA-256: 1c4bbe0ab307e4a1e1f0e590c4b3c3a42855e40176616f56c47d9688b771b0c4
138 Risk Score

Malware Insights

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

The PDF file contains an embedded malicious object and exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF processing within XFA forms. This exploit is designed to download and execute a secondary payload, as indicated by the ClamAV detection 'Pdf.Exploit.Dropped-90'. The embedded file, 'embedded_file_obj0001.bin', is likely the dropped 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
530937cf770235c4d8b1f05b9a1a9c2131d6e0fc50b00f29949729143914215f
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).