Dear Sir,
Yes it is an offense and forgery punishable up to seven years. Your identity will be kept secret. Just send complaint anonymously to all the concerned including police. The relevant law is as follows
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Whistle Blowers Protection Act, 2011
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The Whistleblowers Protection Act, 2014: Comparison of the 2015 Bill with the 2013 amendments
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http://www.prsindia.org/administrator/uploads/media/Public%20Disclosure/whistleblowers%20bill-%20comparison%20of%202013%20and%202015%20amendments.pdf
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Section 415 in The Indian Penal Code
415. Cheating.—Whoever, by deceiving any person, fraudulently or dishonestly induces the person so deceived to deliver any property to any person, or to consent that any person shall retain any property, or intentionally induces the person so deceived to do or omit to do anything which he would not do or omit if he were not so deceived, and which act or omission causes or is likely to cause damage or harm to that person in body, mind, reputation or property, is said to “cheat”. Explanation.—A dishonest concealment of facts is a deception within the meaning of this section. Illustrations
(a) A, by falsely pretending to be in the Civil Service, intentionally deceives Z, and thus dishonestly induces Z to let him have on credit goods for which he does not mean to pay. A cheats.
(b) A, by putting a counterfeit mark on an article, intentionally deceives Z into a belief that this article was made by a certain celebrated manufacturer, and thus dishonestly induces Z to buy and pay for the article. A cheats.
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Section 420 in The Indian Penal Code
420. Cheating and dishonestly inducing delivery of property.—Whoever cheats and thereby dishonestly induces the person deceived to deliver any property to any person, or to make, alter or destroy the whole or any part of a valuable security, or anything which is signed or sealed, and which is capable of being converted into a valuable security, shall be punished with imprisonment of either description for a term which may extend to seven years, and shall also be liable to fine.
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Section 464 in The Indian Penal Code
464 Making a false document. — 341 [A person is said to make a false document or false electronic record— First —Who dishonestly or fradulently—
(a) makes, signs, seals or executes a document or part of a document;
(b) makes or transmits any electronic record or part of any electronic record;
(c) affixes any 342 [electronic signature] on any electronic record;
(d) makes any mark denoting the execution of a document or the authenticity of the 342 [electronic signature],
with the intention of causing it to be believed that such document or part of document, electronic record or 342 [electronic signature] was made, signed, sealed, executed, transmitted or affixed by or by the authority of a person by whom or by whose authority he knows that it was not made, signed, sealed, executed or affixed; or Secondly —Who, without lawful authority, dishonestly or fraudulently, by cancellation or otherwise, alters a document or an electronic record in any material part thereof, after it has been made, executed or affixed with 342 [electronic signature] either by himself or by any other person, whether such person be living or dead at the time of such alteration; or Thirdly —Who dishonestly or fraudulently causes any person to sign, seal, execute or alter a document or an electronic record or to affix his 342 [electronic signature] on any electronic record knowing that such person by reason of unsoundness of mind or intoxication cannot, or that by reason of deception practised upon him, he does not know the contents of the document or electronic record or the nature of the alteration.] Illustrations