What should I do after clicking on a suspect pdf

Hey guys so a few days ago I received a weird email on my university platform.

The email said that there was attached an official thing for me, so I thought it was related to my university and I didn't pay attention to the title which was written strangely. So I clicked on the pdf that accused me of child pornography. I knew that I had never done that and that the procedure didn't work like that but I got …

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