I cannot find a primary source for this. Perhaps a native French speaker could help locate the original report from La Parisien?
Worse, all the English language reporting is parroting the exact same wording as this article, which is a bit odd considering the French report supposedly came out over 24 hours ago.
I believe it’s this article. There’s a paywall, but the header is this:
« Notre but, c’est de terroriser les juifs » : l’inquiétant projet d’attentat d’une cellule d’ados radicalisés
EXCLUSIF. Fanatiques de Daech et d’explosifs, trois collégiens ont été mis en examen à Paris pour avoir projeté une attaque contre une ambassade israélienne. Révélations sur une nébuleuse djihadiste d’adolescents français, belge et russe ultra-connectés.My humble translation:
“Our goal is to terrorize the Jews” : The disturbing attack plan of a cell of radicalized teens. Fanatics of ISIS and of explosives, three students were indicted in Paris for having planned an attack against an Israeli embassy. Revelations about a Jihadist nebula of ultra-connected French, Belgian, and Russian teenagers.
Here it is, the article on leparisien.fr is paywalled. I only skimmed it but it seems to corroborate OP’s link, except the targeted embassy is in a Brussels suburb and not Paris.
You had me at ISIS supporting.