https://kupdf.com/download/download-microprocessor-book-pdf599859cfdc0d60c220300d20pdf#modals

https://www.download-geek.com/en/checkout.html#free

This kupdf.com site show an interesting PDFs on there website to download for free. After going further through download link they forces you to Sign-up , In that form they again forces you to fill your Credit / Debit Card details while saying it's mandatory and it's only for verification purpose ......Wtf?????!!!!!!

People specially from rular areas who were not aware about this type of scams will definitely be prey.

Please do something about this. Block this sites immediately.