That "some reason" is, as other comments have said, to only get responses from the most gullible marks. If you're gullible enough to respond to a typo-ridden email from someone claiming to be a Nigerian prince who just needs you to pay him a small fortune now in return for a huge fortune later, you're worth pursuing. However, that logic doesn't apply here since the phishing attack was targeted. That's why the email did not have deliberate typos. However, unlike Nigeria, Syria isn't an English speaking country, which explains the awkward phrasing in the email's one line.