Question:
How are PDFs containing attachments rendered in Vault?
Answer:
There is currently no Vault functionality to handle PDFs containing attachments, so these files will be rendered as normal PDFs, with the attachments ignored.
For example, the following 1-page sample PDF contains 2 attachments:
When uploaded to Vault, the PDF is rendered with the attachments ignored:
NOTE: The Source File will remain unchanged, so the attachments will always remain available there.
Related Documentation:
Vault Help Documentation: About PDF Source Files