Holded Account Notification – Unaccepted Account Caution – Fake PDF Malware

spotting malware

An email coming from random senders and random email addresses with subjects of Holded account notification or Unaccepted account caution or similar vaguely banking related subjects with a zip attachment is another one from the current bot runs which try to download various Trojans and password stealers especially banking credential stealers, which may include cridex, dridex, dyreza and various Zbots, cryptolocker, ransomware and loads of other malware on your computer. They are using email addresses and subjects that will entice a user to read the email and open the attachment. A very high proportion are being targeted at small and medium size businesses, with the hope of getting a better response than they do from consumers.

Update 5 May 2021: we are seeing a new spam run of these with the basic subject of invoice today

Update 7 May 2021: we are seeing another new spam run of these with the basic subjects of customs, vat, duties, tolls today

2nd Update 7 May 2021: we are seeing another new spam run of these with the basic subjects of invoice again

Some subjects seen with this series of spam emails are:

  • Blocked bank operation report
  • Holded account notification
  • Unaccepted account caution
  • Rejected operation warning
  • Blocked transaction warning
  • Rejected invoice caution
  • Blocked invoice message
  • Received invoice message
  • Received invoice report
  • Received invoice warning
  • Holded invoice alert
  • Duties increase guidance
  • adjustment alert
  • Toll change report
  • Custom change report
  • Tax change notification
  • Levy change reminder
  • Invoice in accordance


Some attachment names are

  • block_warning_information.zip
  • nullfication_alert_details.zip
  • rejection_message_data.zip
  • rejection_notification_form.zip
  • invalidation_alert_document.zip
  • rejection_invoice_information.zip
  • nullfication_invoice_details.zip
  • block_invoice_information.zip
  • abrogation_invoice_statement.zip
  • cancelation_invoice_document.zip


Almost all of these also have a password stealing component, with the aim of stealing your bank, PayPal or other financial details along with your email or FTP ( web space) log in credentials. Many of them are also designed to specifically steal your Facebook and other social network log in details.

All the alleged senders, companies, names of employees and phone numbers mentioned in the emails are all innocent and are just picked at random. Some of these companies will exist and some won’t. Don’t try to respond by phone or email, all you will do is end up with an innocent person or company who have had their details spoofed and picked at random from a long list that the bad guys have previously found.

The bad guys choose companies, Government departments and organisations with subjects that are designed to entice you or alarm you into blindly opening the attachment or clicking the link in the email to see what is happening.

Please read our How to protect yourselves page for simple, sensible advice on how to avoid being infected by this sort of socially engineered malware.

The email looks like:

Be noted that your depositis rejected.

Please see the report for detailed information.

Susan Morgan

Account Security Department


Be adviced that your payment not accepted.

Please see the document for detailed information.

Mary Roberts

Senior Manager


We inform you that your fund not accepted.
Please look the document for detailed information.

Jane Jones
Senior Manager

Invoice versions look like :

Be noted that your invoice include fake costs.
Look at the document and check replacements.

Susan Lewis
Commercial Customers Department


We inform you that your invoice include bad data.
Look at the document and make amounts.

Laura Jones
Bank Officer


Be warned that your invoice include bad values.

Observe the document and checkup amounts.

Rebecca Morgan

Commercial Customers Department


Be warned that your invoice contains fake prices.

Observe the document and checkup data.

Anna Jackson

Account Security Department


Invoice in accordance with the transaction made yesterday. Please check

Tax and customs versions look like:

Be warned that VAT rises from Thursday.
See the instructions below.
Do not forget that sums to be paid to the tax authorities will be reestimated.

Susan Nelson
Tax authority


Be adviced that VAT increases from Thursday.
Observe the instructions attached.
Note that levy values to be paid to the treasury have to be reestimated.

Laura Jackson
Tax Consultant


We inform you that VAT doubles after Friday.
See the act attached.
Do not forget that money to be paid to the tax authorities will be reevaluated.

Jane Adams
Senior Consultant

4 May : block_warning_information.zip | nullfication_alert_details.zip : Extracts to: block_warning_report.exe | abrogation_warning_information.exe Current Virus total detections: 1/55 | 1/55

5 May 2021: One example only as all have different sha256 # and file names | cancelation_invoice_report.exe 4/56

7 May 2021: One example only as all have different sha256 # and file names | enacted_act_official_copy.exe 25/56

This is another one of the spoofed icon files that unless you have “show known file extensions enabled“, will look like a proper PDF file instead of the .exe file it really is, so making it much more likely for you to accidentally open it and be infected.

Be very careful with email attachments. All of these emails use Social engineering tricks to persuade you to open the attachments that come with the email. Whether it is a message saying “look at this picture of me I took last night” and it appears to come from a friend or is more targeted at somebody who regularly is likely to receive PDF attachments or Word .doc attachments or any other common file that you use every day.

The basic rule is NEVER open any attachment to an email, unless you are expecting it. Now that is very easy to say but quite hard to put into practice, because we all get emails with files attached to them. Our friends and family love to send us pictures of them doing silly things, or even cute pictures of the children or pets.

Never just blindly click on the file in your email program. Always save the file to your downloads folder, so you can check it first. Most ( if not all) malicious files that are attached to emails will have a faked extension. That is the 3 letters at the end of the file name.

Unfortunately windows by default hides the file extensions so you need to Set your folder options to “show known file types. Then when you unzip the zip file that is supposed to contain the pictures of “Sally’s dog catching a ball” or a report in word document format that work has supposedly sent you to finish working on at the weekend, you can easily see if it is a picture or document & not a malicious program. If you see .EXE or .COM or .PIF or .SCR at the end of the file name DO NOT click on it or try to open it, it will infect you.

While the malicious program is inside the zip file, it cannot harm you or automatically run. When it is just sitting unzipped in your downloads folder it won’t infect you, provided you don’t click it to run it. Just delete the zip and any extracted file and everything will be OK.

You can always run a scan with your antivirus to be sure. There are some zip files that can be configured by the bad guys to automatically run the malware file when you double click the zip to extract the file. If you right click any suspicious zip file received, and select extract here or extract to folder ( after saving the zip to a folder on the computer) that risk is virtually eliminated.

Never attempt to open a zip directly from your email, that is guaranteed way to get infected. The best way is to just delete the unexpected zip and not risk any infection.

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