You can upload the file (if under 650MB) to VirusTotal to have it analyzed by over 70 different antivirus engines simultaneously.
If the archive contains .exe , .bat , or .msi files, delete it immediately. These are not images or videos; they are programs that can infect your computer. NKStefanie.rar
Downloading or opening unknown .rar files from untrusted sources carries significant risks: You can upload the file (if under 650MB)