Is it possible that this motherboard is brand new? Weird stains

Hello, I recently bought a (brand new) Gigabyte X570 Aorus Ultra motherboard and I discovered some weird-looking stains (looks like glue residue) and I have been told that it is most probably flux residue.

See the photos I took here: https://imgur.com/gallery/nRXKLKo

If you are experienced with hardware and motherboards, do you think that this board could indeed be brand new? Thank you for your time.

UPDATE: Gigabyte themselves have verified that this is not a new board