In addition to what DavidR said in reply #30,
avast as used by VT does not have PUP detection enabled.
mike 1,
nothing will protected you from new ransomware as it is technically not possible.
100% protection/detection is simply not possible.
That would be like doctors creating medicines that will cure all diseases that don't exist at this time.
How could they know what new diseases will appear ?
Software can help, but security starts with what the user knows/does etc.
On a note: the link you provided shows things in Russian(?) and this is a English forum.