FireFox prompted me to download a file even though I did not click on anything

Hello.

I searched something in google and went to images, suddenly firefox froze and it gave me a prompt to download a file. I did not even have a chance to click on any pictures. The type of the file was not said. I do not think that it was an htm file, which is a common thing with firefox.

Is this a normal behaviour? Has anyone encountered this before? Could it be malware?

I am running firefox on windows 10 with the strict protection setting and uBlock origin.

I scanned my pc with windows 10 full scan and malwarebytes full scan. Both came back clean

Ask extra questions if it will help troubleshoot the problem.

Note: The clicking on the images section and opening download screen might have been a weird timing, not sure. It was an exact moment though, as soon as I clicked on "images" FF froze and it popped up.

Thanks in advance.