Inserting pdf files into Numbers cells

I have several hundred documents stored as pdf's (genealogy). When I acquire what may be a new document I would like an easy lookup means to see if I already have the document. I envisage a table with several columns:

an index number

a pdf image for a quick examination

a keyword column

How can I store pdf images in individual cells? Specifically, One that can be zoomed for examination?

I know I can use a filter on the keyword column to find applicable index numbers, but I would like a quick look at the document. I seem to remember doing this in Excel years and years ago!