Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae49c776cbeb4bd7…

MALICIOUS

PDF

11.8 KB
MD5: 9361a4b240ff43de14f4a3b08d5d542a SHA-1: 01a1b2323bb63a818050ad15bd0c999aee768c7c SHA-256: ae49c776cbeb4bd79aec25e00859bc400a185e11cd183d3a75c93bc63055569b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded content and a script payload, as indicated by the PDF_EMBEDDED and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. ClamAV detection confirms this as Pdf.Exploit.Dropped-78. The embedded file and script suggest the PDF is designed to download and execute a second-stage payload.

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
4b56b9a5275ad91e38fb34ba1304812345ee7e9a09cad89468ff444bcd1c76d2		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11343 bytes

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