It looks like you're referencing a filename for a season 11 episode pack of The Walking Dead, likely from a release group using 480p NF WEB-DL (Netflix web download, standard definition).
NF: This indicates the source of the content was Netflix. The final season was added to the streaming platform globally after its original AMC broadcast. The.Walking.Dead.S11.480p.NF.WEB-DL.rar
Cons:
(Mac) to extract the video files. Simply right-click the file and select "Extract Here" to access the episodes. It looks like you're referencing a filename for