These domains were all registered in the past few days. The standard email approach seems to be "from" the victim, and they are often badly translated into Portuguese and Spanish.
The "jobs" on offer are not jobs at all, they usually involve money laundering and other criminal activities. They form part of this very long running scam that has been going on for years.
Three of the four domains have a new (fake) registrant that we haven't seen before:
Alexey Kernel Email: email@example.com Organization: Alexey Kernel Address: Kreshchatyk Street 34 City: Kiev State: Kiev ZIP: 01090 Country: UA Phone: +38.00442794512
If you have an example email, please consider sharing it in the comments.