If the file is safe, the name "AnDay" might be a typo or shorthand for several known digital entities:
Alternatively, use the free and open-source program 7-Zip, which can easily unpack RAR files. Archivo de Descarga AnDay​​.rar
Before you attempt to open or interact with the file, ensure your system is protected: If the file is safe, the name "AnDay"
It could be an exported archive from the Andy food safety and operations app used by restaurants to store manuals and recipes. If the file is safe
Download the official RAR for Android app by RARLAB from the Google Play Store .
Where did you this specific file? RAR - Apps en Google Play
Do not open the file. Upload it directly to VirusTotal to have it analyzed by dozens of different antivirus engines simultaneously.