Business Insider obtained a PDF guide that is sold online for just £2.59.
It details how scammers operate fake dating site profiles in order to con men out of money.
The 37-year-old world champion, who is running in May elections for a seat in the Philippines' Senate, told a local broadcaster that gay people were "worse than animals." "It's just common sense. " said Pacquiao, who already has a House of Representatives seat.
He subsequently posted an apology to You Tube, saying he was sorry for hurt he had caused, but also reiterated his opposition to same-sex marriage, which is not permitted in the staunchly Roman Catholic country.
Bitcoin is cryptographic currency favoured by criminals as it allows semi-anonymous online transactions.
"In the Philippines where he is running for senate, most of the people are against same-sex marriage," Arum said.
The country ranked as the 10th most gay-friendly in a global survey covering 39 countries, in which only 17 had majorities accepting homosexuality.
It's pretty easy to tell: They send the same message over and over, often with the same link.
But there's a type of dating site scam that's far trickier to spot, and the people who operate it claim to be making thousands of dollars every month fooling vulnerable men.