Malicious PDF — malware analysis report

Static analysis result for SHA-256 225be8ec5c762a00…

MALICIOUS

PDF

7.9 KB Created: 2012-04-27 17:25:24
MD5: 7ca8c775e411fbe4b91fe38503639d29 SHA-1: 4107ba0d695de0e99be63fc2b8f208f56892a887 SHA-256: 225be8ec5c762a00c4bb49279bdf58b51806142f8e4ad43c9082ca65f71bb0f9
98 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-156969-1' and the heuristic firing 'PDF_EMBEDDED_SCRIPT_PAYLOAD' indicate that this PDF contains an embedded script designed to exploit a vulnerability. The embedded file artifact further supports the presence of a secondary payload. The script likely downloads and executes this payload, leading to a malicious outcome.

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
dcb559748b9601e29f61e5dd346c5879723c25a3c37bd056ff7299d18e19aec1
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).