I'm in the unfortunate situation that I can not find my indesign file, I only have an exported pdf. Is there a way i can find out which indesign file my pdf was exported from and possibly where that file is located?
Look into file meta information. If nothing is found, make a copy of the file an open it with a text editor. If you find nothing important go to your computer search and look of some important words. If that does not help, you might be out of luck.