Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf04df3f8bff08c4…

MALICIOUS

PDF

7.7 KB Created: 2012-04-17 19:53:38
MD5: 73e1e359015635d87bb633651103e5da SHA-1: 0c01956d57d46e05c48e87a9808970ee152860c8 SHA-256: bf04df3f8bff08c4d8cde044ca67eb7f78d4846820ea51ed12de1fab97861f8e
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.001 PowerShell T1105 Ingress Tool Transfer

The critical ClamAV detection 'Pdf.Exploit.Dropped-156969-1' strongly indicates the presence of an exploit. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic further suggests that a script is embedded within the PDF, likely intended to download and execute a secondary payload. The document body contains garbled text, but the presence of embedded artifacts and script payloads points towards a malicious intent to exploit vulnerabilities and deliver further malware.

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_obj0008.bin
76d0683ed471f60d6c970aa2da331befd8e16f23b4ea79dd013b29c849d5dae9
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xBAF 7163 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).