Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9bee22bd4bf5f0…

MALICIOUS

PDF

7.9 KB Created: 2012-04-27 17:25:24
MD5: 4f453b6ad2a2fa75f0fe1bdfa8109c19 SHA-1: b7886fa07890e4d7b4b7e3d407b946abb0b3b049 SHA-256: fa9bee22bd4bf5f0533f795aba0d97e2dea7199eaa8a8a79aa7f65ff5400e146
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The critical ClamAV detection 'Pdf.Exploit.Dropped-156969-1' strongly indicates a known exploit within the PDF. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is designed to deliver a secondary malicious payload. The document body contains seemingly random text, which is common in obfuscated or exploit-laden documents.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-156969-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-156969-1
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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_obj0010.bin
9a808bb95f94ea67410339346e7837d14f6bd68a2176f10f2c48bf42796d9022
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0xCB8 7237 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).