PDF Content Splitter - split multipage PDF into individual Invoices/Receipts

We need to handle scenario where a single, multi-page PDF is automatically split into separate files, each representing a distinct transaction.

Use case: Client uploads a batch scan of invoices or receipts. Each transaction can also be multi-page. Example: 50 page PDF containing a mix of single page and multi-page invoices. Some can have attachments.

The resulting split should ALWAYS start with 1st page of invoice. If there are attachments, these do not need to be split apart and can be part of the resulting transaction. In our experience, each invoice starts with Invoice page 1 and hence that can serve as an indicator where to split the file.