Hi there. Just a clarification that the “2.7” is not the version number. The pack is called “dwarvesv2” and the .7z refers to 7zip, the program I use to create archives. 7zip is a very common and well known archive software but because it is an archive it will be flagged by anti-virus software just like an .exe would. It’s a false positive, in other words, there is only .png image files in the archive.
I get the same warning every time I DL something from the open web. If I may suggest, try googling about 7zip and virus detection and see for yourself.