You might want to consider another upload site such as MediaFire or ezfile (or another.) I've strayed away from 4Shared somewhat over past 2 years since they are struggling because banks were forced to ban them from credit card transactions (due to pressures from the music & film industries.) So as a result 4Shared are relying desperately on any advertising they can find. Most of their advertisements are spyware/virus spam downloads. I've been tricked myself with their download buttons.
Also people must be members of 4Shared to download the files. Also, even free members need to wait 60 seconds to download. Neither of these things are true with the hosting sites I suggested. Though ezfile does require a very simple reCaptcha.