I am afraid that there's isn't a way to trace the origin of the file. I'd still like to take this query to our product to check if there's any possibility to get it done. However, we would need the file to investigate it. Please upload the file to CC or Dropbox and share the link via PM.
For you to investigate, do you mean to share the file link in this forum or somewhere else? I do not want to share the file publicly because it is the intellectual property of a designer. Kindly clarify.