Yes but why? Russia is a third world country, with resources and population of Brazil. Why would Brazil care about who is president in some distant country?
Because Russia is a major regional power whose regional interests are frequently in conflict with the Western Alliance (both NATO specifically and the other Western European political and economic structures), which they've been trying to weaken. Their manipulation with regard to, among other things, Catalán independence, Brexit, and the attempts to weaken Clinton and boost Trump primarily, but also some other rivals (which seems to have been expected to fail in electoral terms but leave the resulting Administration weaker with deeper and more aggressive domestic resistance than without intervention) all fit into that pattern.
> Russia is a third world country
The (primary successor in interest to, at least) definitive second world country, actually.