The claims were reported in financial new blog Zero Hedge, which has been criticised for its extreme and sometimes pro-Russian content.
Rumiyah magazine urges ISIS supporters to put their faith in Allah over a 'false deity' and Western democracies.
Le Pen and Macron are currently making a final push for votes on the last day of campaigning before the election.
Centrist Macron has a substantial lead, with one poll putting him 60 points ahead of Le Pen.
An Ifop poll says he leads Le Pen 63 per cent to 37 per cent. Four other surveys show Macron on 62 and Le Pen on 38.
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