Automatic attachment of pdf's to the records in section

Hi Community,

My requirement is to attach bulk pdf with the section records based on the mapping of the PNR column automatically.

My question is 

1. Can we upload bulk(more than 1000) of pdf's in creatio altogether? If yes then how?

2. How can I develop functionality to attach the pdf with the section records based on the column mapping automatically?

All I knew is that manually we can attach the pdf's in the section records.

Please suggest some solution!

Many thanks !

Regards