Malicious PDF — malware analysis report

Static analysis result for SHA-256 21389267bc8577ef…

MALICIOUS

PDF

11.7 KB
MD5: 8cb439128e15a9db45ab6ecfe36e8681 SHA-1: 743f64a087392040cd8d3d781b1bffa20495ed45 SHA-256: 21389267bc8577ef59d38fb237b699ae931b597a8c07ee53081f385935dc2ce0
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The PDF file contains an embedded script payload and an embedded file, both of which are indicative of malicious intent. ClamAV detection as 'Pdf.Exploit.Dropped-78' further supports this assessment. The embedded file 'embedded_file_obj0008.bin' is likely the delivered payload.

Heuristics 6

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
4e48d68baeb3751588bf6a2debfd7c474fe2e6d861705801e0d6a4d5a5ec9a13		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11260 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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