Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbdb93f7047bf188…

MALICIOUS

PDF

11.7 KB
MD5: 8f843563211c08ba8d34ce9013fd1085 SHA-1: 2626762817ce0cf3f9cbe1734c05c1b52778b8ef SHA-256: dbdb93f7047bf18867df7f049c71d306a15d385080b45d910b39ffb52cdb051c
96 Risk Score

Malware Insights

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

The PDF file contains embedded script content, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. ClamAV detection of 'Pdf.Exploit.Dropped-78' strongly suggests a known exploit is present. The embedded file artifact further supports the delivery of a secondary payload. The embedded URLs are related to Adobe XFA, which is a common vector for PDF exploits.

Heuristics 5

  • 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
  • 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
0d7ab7e07afb09211c86dd455ab9df3f522e6904f9545be345eb94bc48c37e06		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11180 bytes

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