This gibberish means that it is probably gzip-compressed and should be vcf.gz. Please don't get used to open OMICS files in plain text editors. Use Unix tools such as less, head or something like that.
Rename your file to .vcf.gz and then try and see whether something like zless can properly open it. Frankly, and I really mean no offense, if you are stuck with these kinds of basics you must spend time with Unix fundamentals before diving into analysis.
from manual: