Yeah, it looks sketchy as hell.
No, it's certainly not government. Each line would be tagged And doesn't look like any professional private intelligence firm I've ever seen. If they copy and pasted the data to keep their source safe, why black out the company comments section instead of delete it, why keep the 'headers'?
This looks like something teens or incompetent adults would make as fake reports. Hell, most teens I know could come up with better looking letterhead. If you read the report, it's not even offering anything except "Source (letter) says that So and So told him that Russia is blackmailing Trump. No word on what the blackmail actually is. Wording isn't professional either. Also tries to use pseudo-Russian words as slang.