You can convert a raw binary file to a PcapNG file, which you can use for example in Wireshark.
The following command transforms a binary file input_raw.bin to the output.pcapng file:
nrfutil trace lte --input-file input_raw.bin --output-pcapng output.pcapng
By default, the PcapNG output includes only AT, IP, LTE-RRC, and NAS-EPS packets.
To include all packet types, add --modem-trace-filter all to the command:
nrfutil trace lte --input-file input_raw.bin --output-pcapng output.pcapng --modem-trace-filter all