Project Euler hacked?
Some pages on the Project Euler site are trying to deliver a file "adobe_flashplayer_7.exe" which is is infected with the virus "MSIL/Injector.KRB!tr".
For instance look carefully at https://projecteuler.net/news or https://projecteuler.net/thread=341
Comments
In fact, better take a look at https://www.virustotal.com/en/url/48ef50be619c0c298a7af51c67...
That's the file that the PE try to open http://www.rcmodelcentre.co.uk/cache/adobe_flashplayer_7.exe
Discussion: https://news.ycombinator.com/item?id=9990221