Splitting a pdf containing batch of scanned documents My question is primarily: is there any ML research paper about splitting a pdf containing a batch of scanned documents (eg bank statements) into individual documents?

I have searched for this but I have not found any relevant research paper or any application in general mentioned on the Internet.

I would be primarily interested in the feature engineering of these papers/applications but also in general in the whole approach.
"Machine Learning for Digital Document Processing: from Layout Analysis to Metadata Extraction" by Esposito, Ferilli, Basile, and Mauro goes into detail about how to create a custom system for parsing digital documents, including pdfs. It proposes a generalized process to learn any structure within documents.