Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d40f14cd73fdae0…

MALICIOUS

PDF

7.8 KB Created: 2012-04-27 17:25:24
MD5: 3e4b4f071c6359e5e9f8bfff6eadb336 SHA-1: 0ff2d452f3434d1e19e77f8eabc8d436c9f40bb7 SHA-256: 7d40f14cd73fdae0c0fd6c2de6f30d478aeecf76ecb1a441173ff22b4009b6f2
98 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-156969-1' and the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic indicate that this PDF contains an embedded exploit. The embedded file 'embedded_file_obj0010.bin' is likely the secondary payload. The document body contains seemingly random text, suggesting it is not intended for direct user interaction but rather to obscure the malicious content.

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
516e105f01ca998d7d21a6870802595ae5c77ca6d5ef468b54a1d6c5af9e155d
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0xCB8 7229 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).