From my reading (IANAL), there are three types of occupational fraud: asset misappropriation, corruption, and financial statement fraud. Since job posting are interpreted as a positive signal but are not (it seems) typically and explicitly included in formal financial statements, this wouldn't rise to the level of criminal fraud.
I am also not a lawyer, but it seems like purposefully lying about how many jobs you have in order to increase the stock price seems… shady at best.
grabs pearls oh no!
I mean we literally elected a president who was convicted of falsifying business records (a form of fraud).