1 paycheck of just a few thousand dollars USD is a lot of money in other countries.
The scam is hold on to the job for at least 1 paycheck. It’s a expensive for companies to (legally) fire people, so if you get hired you typically can get at least a few grand even if you do zero work.
Due to the wealth disparities involved, a month’s Silicon Valley money is a years income for a scammer in a poor country.
So just produce LLM-level code, make excuses, say you’re learning the code base, get lots of help from colleagues, turn in mediocre work, and if you can hang on for three months before they fire you - that’s decent money!