[daplunk]

If all you have is a PDF then you really arent in a positive position. It is possible, I've seen it done with incredibly custom and labour intensive OCR programs. PDF's aren't equal though so it will depend on a few elements such as age of the pdf and if the pdfs are locked.

If you can cut and paste from the pdf then you may be able to use some of the more advanced (expensive) pdf tools to extract the text.

Ultimately though... csv and json are magical formats that you can do incredible things. Farlings json csv importer for Obsidian.md is incredible with how powerful it is. Completely game changing given you can not only import your content but also design what the import looks like using Handlebar templates.