Does anyone know or provide .edu or .gov backlinks reference below..

https://intranet.math.gatech.edu/sites/default/files/2025-08/Official-United-Airlines%C2%AE-Customer-Servicetm-USA-Contact-Numbers-In-Detail-Guide.pdf

https://www.cucei.udg.mx/maestrias/biotecnologia/sites/default/files/webform/ledger_nano_x_wallet_support_number_-_how_to_reach_the_right_help_ledger_full.pdf


Does anyone know they are creating these links... Or someone provide such links ...

So many threads discussing pdf upload methods have been made over the years, try a quick search: https://www.blackhatworld.com/search/23061695/?q=pdf+upload&o=relevance

These are called parasites. You should search for parasite SEO to find out more about them. There are tens of threads about uploading such pdf files. So, try searching for more information within the community.