Currently, the share of pharmaceutical advertisements reaching users’ inboxes accounts for one quarter of the total volume of all spam. Several factors contribute to the popularity of this type of spam.

Firstly, in the USA, which is the main target for pharmaceutical spam, the situation with buying medications is not as simple as it is in Russia. It is next to impossible to buy pharmaceutical products in an American pharmacy without a doctor’s prescription. So if you need to take pills regularly, you must visit a doctor every time you go to a pharmacy. It means Americans have to pay both for the doctor’s signature on the prescription, and for the medication itself.

Secondly, the companies selling pharmaceutical products via the Internet (on prescription only) have made incredible profits.

In this situation, the appearance of illegal online shops that offer considerable savings is hardly surprising. However, the medication that they offer is mostly counterfeit or simply fake. Fraudsters themselves often send out spam mailings containing adverts for suspicious products that they then sell online.

Legitimate vendors warn that: At best, ‘economy’ pills are simply ineffective and at worst, they may cause serious health problems. Sometimes ‘considerate’ fraudsters are only after the customer’s credit card data, which the customer enters on the site, and have no intention of supplying any pills, hazardous or otherwise, to the naive consumer.

The majority of spam messages in this category are written in English. Pharmaceutical spam on the Russian Internet is quite rare. This is because online shopping is not as popular in Russia as it is in western countries, medical services are much cheaper and Viagra can be easily bought at the nearest chemist.

What do spammers advertise?

According to Kaspersky Lab’s classification, this spam category includes medications, dietary supplements, offers of medical and health-improvement services and allied products.

Viagra is no doubt the unsurpassed leader of all the spammers’ offers. The ‘blue pill’ has established a new pharmaceutical branch. A great number of fraudsters exploit the legendary reputation of this rather expensive medication and its lesser known analogues – Tsialis and Levitra. The most uninventive fraudsters offer ‘original hexagonal pills’ at a price considerably lower than $10, without a prescription being required.

More creative fraudsters sell pills that allegedly contain some special ingredients. The Pfizer Corporation, developers of Viagra, warn that: ‘Generic Viagra’ does not exist and will not appear before 2011 – the expiry date for Pfizer patents.

Another spammer adaption appeared in reply to the increasing interest in natural medications: spammers immediately started selling ‘Natural Viagra’.


In second place on the fraudsters’ virtual price list is weight loss supplements. The most popular of these being Hoodia Gordonii. This cactus has long-since been used by Africans to ward off hunger. Hoodia Gordonii has become world famous due to some very effective advertising by the abovementioned Pfizer Corp. However their efforts were in vain as the desert plant cannot be cultivated industrially. In addition, the active substance turned out to have unpleasant side effects and this meant that it could not be used by the pharmaceutical giant. Buoyant demand for this plant has made it a critically endangered species and the market has become flooded with products that have nothing to do with Hoodia Gordonii except for their name. In many countries this ‘natural hunger suppressant’ was forbidden and that eventually pushed this suspicious product over into the spam category.


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In third place come antidepressant and sedative medications. The main hero of Chuck Palahniuk’s ‘Fight Club’, Jack, suffered from insomnia, but the doctor refused to prescribe him any sleeping tablets. You would not be able to buy any medication at an American pharmacy without a prescription. Given that taking tranquilizers in the USA is considered normal, it’s quite natural that antidepressant and sedative medications that can be bought without a prescription are so popular.

Outright quack remedies have their place in the spam list too. The fraudsters who sell aphrodisiacs guarantee ‘Total Success’ – if you use the substances that they sell to attract the opposite sex. Spam circulating in western countries regularly offers ointments to help enlarge your penis size exponentially, whilst Japanese spam occasionally offers breast enhancement without plastic surgery. Everything that cannot find its way on to the shelves of credible drugstores, like pills that change sperm taste or volume, is sold through illegal emails.


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Technical tricks of pharmaceutical spam

Technically, pharmaceutical spam is one of the most sophisticated types of unsolicited mailings. The list of popular medications is not very long and has long been included in email filtering systems. That is why spammers have to find new ways to bypass filtering in order to deliver adverts containing well-known names of medications to users’ inboxes.

The easiest way to ‘deceive’ the system is to write the name of the medication by combining letters, dots, gaps and other symbols (V i a_g.r,a LaEcVeIgTmRnA). Another widely used trick is to replace the letters with similar symbols (for example, l is replaced by 1, a – by @, etc) – /@1|um ( ia1I$. A human can read it, but a program cannot.

However, the use of these tricks often leads to seriously distorted text. This may result in a user failing to guess what they are being offered.

More skillful spammers prefer HTML. They use invisible text (white letters on a white background) or split the words across tables, thus allowing recipients to read the text, but the system detects a senseless mix.

This is what a user sees:


This is what a robot sees:


With the development of zombie networks, spammers have the opportunity to send out sizeable emails with the advertising drawn on the picture itself. Electronically differentiating the text from the picture is still a highly technical task for a computer, especially if fraudsters have distorted the picture, added random background or just cut it into small pieces.