Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a1c82c3fda2863…

MALICIOUS

PDF

7.9 KB Created: 2012-04-27 17:25:24
MD5: 6db46a02c73352061c923f973cba7e8e SHA-1: f6604ea830b4aa58d9570864a124a5ca9bb8ef9c SHA-256: 44a1c82c3fda28639c90b142424c69a110e263b156cc8680131bf5ffd67e3380
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.001 PowerShell

The critical ClamAV detection and the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic indicate that this PDF contains an embedded exploit. The embedded file artifact further supports this, suggesting the PDF is designed to drop and execute a malicious payload. The document body text appears to be unrelated filler content, likely to obscure the malicious nature of the file.

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
98310140a5165b73bf867ea4bfcd6829c9b7f2728810537e51963935331f2f99
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).