How can I read a closed PDF using full text?

I tried to open the pdf using Start Process, then attach to that window and use screen scraping. However, i get a timeout and the error “selector not found”. I tried to use “attach to live element”, but got the error “could not attach to live element”.

Using the read pdf activity doesn’t give me the output in the right format I need; I need the format like how “full text” using screen scrape gets me.