In The Pronunciation of Standard English in America, by George Philip Krapp (1919), I found the following surprising statement:
For malinger the standard pronunciation is [mə´lɪndʒə̉ɹ], though occasionally speakers are led to pronounce the word as though it were a variant form of linger [´lɪŋgə̉ɹ].
(p. 131; the "ə̉" is a placeholder for a character that I can't find in Unicode; it's like a schwa but the top part is curlier than usual)
I haven't found any other source (from any time period, about any variety of English) that confirms Krapp's description of [məˈlɪndʒəɹ] as "the standard pronunciation" of malinger. The 1918 pronunciation guide "Every-day pronunciation", by Robert Palfrey Utter (who lived in America), gives the pronunciation of "malinger" only as "mã̇lĭṇ´gêṛ", which corresponds more or less to IPA [məˈlɪŋgə(ɹ)].
Does anyone have any further information about the variant pronunciation of malinger with [dʒ], and why Krapp might have thought of it as the "standard pronunciation" of this word?