PDF_PHISH.AUSEDI

August 22, 2017
 Analysis by: Wilbert Vidal
 ALIASES:

Trojan.PDF.Phishing.LC (GData); Pdf.Trojan.Pdf.Wsjy (Tencent); Trojan.PDF.Phishing.LC (BitDefender)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Spammed via email

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

  TECHNICAL DETAILS

File Size:

45,805 bytes

File Type:

PDF

Memory Resident:

No

Initial Samples Received Date:

05 Jul 2017

Payload:

Displays message/message boxes

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Other Details

This Trojan presents the user a fake message tricking them to click on the following link:

  • http:/{BLOCKED}.to/NXMFEA
  • The above redirects to https://{BLOCKED}mosambi.com/wp-content/rss.php or https://{BLOCKED}rnational.org/css/dd/Adobe2017

NOTES:

This malware arrives in the following spammed email:

Upon execution of the file, the user is presented with a fake message tricking users them to click 'SHOW RECEIVED DOCS HERE' to redirect them to malicious sites.

However, as of this writing, the said site is inaccessible.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.514.02

FIRST VSAPI PATTERN DATE:

05 Jul 2017

VSAPI OPR PATTERN File:

13.515.00

VSAPI OPR PATTERN Date:

06 Jul 2017

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Close all opened browser windows

Step 3

Identify and terminate files detected as PDF_PHISH.AUSEDI

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Scan your computer with your Trend Micro product to delete files detected as PDF_PHISH.AUSEDI. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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