Well this one, MINI-SKYNET-SAT4U.EXE, although has the greatest number of detections most of them are either generic or heuristic, which are more prone to false detection, so you should send that to avast for analysis as a possible false positive.
Not sure what this is weird file name, 8906f0940018792870191ae0f967940074455aad.EXE and isn't detected in VT by avast, the 3 detections are I believe generic also.
Send the sample to virus@avast.com zipped and password protected with the password in email body, a link to this topic might help and false positive in the subject.
Or you can also add the file to the User Files (File, Add) section of the avast chest (if it isn't already in the chest) where it can do no harm and send it from there. A copy of the file/s will remain in the original location, so you will need to take further action and can remove/rename that.
Send it from the User Files section of the chest (select the file, right click, email to Alwil Software). It will be uploaded (not actually emailed) to avast when the next avast auto (or manual) update is done.