I’ve seen some interest in PDF Expert integration. Here’s my script to integrate — ideally PDF Expert would add AppleScript support.
I don’t use PDF Expert myself and haven’t done much testing, so do let me know if this does what you want.
tell application "System Events" get name of first window of process "PDF Expert" end tell
tell application "System Events" tell process "PDF Expert" if enabled of menu item "Show in Finder" of menu 1 of menu bar item "File" of menu bar 1 then click menu item "Show in Finder" of menu 1 of menu bar item "File" of menu bar 1 delay 0.1 tell application "Finder" set theItems to selection set ext to name extension of item 1 of theItems if ext = "hook" or ext = "HOOK" then set filepath to item 1 of theItems as alias return read POSIX path of filepath end if set theURL to URL of item 1 of theItems close front window activate application "PDF Expert" get theURL end tell end if end tell end tell