The riddle was changed, so I can explain how it works without providing any "spoilers" to the current riddle.
The massive block of spammy text is actually something encoded in Base64, which is not machine code. There are two ways to attack this: Type out all the text in a text file, or copy-paste it from your logs.
Now find a Base64 encoder/decoder (I used this one: https://www.base64decode.org/). Copy-paste the text into that to get the riddle in plain English. "What word in the English language does the following: the first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire word signifies a great woman."
The answer to the riddle is "heroine."
First 2 letters: he (this is a male)
First 3 letters: her (this is a female)
First 4 letters: hero (this is something great)
Entire word: heroine (this is a great female)
When you got to the riddle room, you would answer with "heroine" or "/riddler heroine."
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