I understand.

 

In an earlier post I had mentioned I logged in via SSH and did a cache clear. I forgot to mention I also checked the directory at that time. The file is not present.

 

I also searched the entire HTML directory, via Linux Shell in SSH, for all " *.pdf ", and it's not present.

(I.e. find /home/<my user name>/html/wp-content/uploads -name "*.pdf" )