Allegra Spender has denounced as “false, misleading, and offensive” a pamphlet targeting her that is being distributed anonymously in the Sydney seat of Wentworth and which the Australian Electoral Commission is investigating.

On Monday the AEC said it had received complaints about “the distribution of an unauthorised pamphlet opposing the member for Wentworth which is in breach” of electoral laws which require material to be authorised with the name and address of its source.