About: Adobe Acrobat Reader DC software is the free global standard for reliably viewing, printing, and commenting on PDF documents. For step-by-step instructions, see Install Adobe Acrobat Reader DC on. in the Dock) and send the file path to the clipboard. Otherwise you can still use OS X's Automator application and create a small application to drop the document icon onto (e.g. I'm not familiar with KeyboardMaestro, but I think it should be able to utilize this standard OS X feature somehow. If you drop it in a TextEdit document, the PDF is embedded in the text document, etc.
For example, if you drop the icon on the Desktop, the Finder creates an alias icon. In Acrobat, like in many applications, you can drag-and-drop the document icon from the window's title bar to other applications, which hands over the file's path (hold down the mouse button slightly longer before dragging).