Since "pack 1203.rar" is a common naming convention for batch uploads, its contents depend entirely on where you found it:
Occasionally used by third-party sites to bundle hardware drivers. 2. Verify File Safety pack 1203.rar
Sometimes refers to a collection of brushes, fonts, or stock images (often "Pack #1203"). Since "pack 1203
Inside the RAR, look for files named things like photo.jpg.exe . These are viruses disguised as images. pack 1203.rar