Secret Message 1 [730 Solves]#
Description#
We swiped a top-secret file from the vaults of a very secret organization, but all the juicy details are craftily concealed. Can you help me uncover them?
Author: SteakEnthusiast
Attachments: secret.pdf
Solution#

The flag is hidden but it can be revealed by rectangular selection with text.

Flag#
uoftctf{fired_for_leaking_secrets_in_a_pdf}