Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad85a7f402b136fa…

MALICIOUS

PDF

21.4 KB Created: 2019-04-30 02:24:17 +01:00 Authoring application: mPDF 5.7
MD5: 406e591a4d17ec4db2b937178deec7af SHA-1: c5c0bd5432bd5def78f23fca0c65c690d056062c SHA-256: ad85a7f402b136fa4e811347d89de897feb091cda4c3cbb57deb9f445ad3800e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the ML classifier also flagged this as malicious, the specific intent appears to be the creation of a link farm rather than direct payload delivery. The majority of the extracted URLs were confirmed as benign, suggesting the primary goal is not malicious content distribution through these specific links, but rather to manipulate search engine results or direct traffic. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://muicuiu.dumb1.com/4a03a01a02a04a01/The-Management-Secrets-of-T-John-Dick-by-Augustus-Gump.pdf
    • http://muicuiu.dumb1.com/7a05a09a00a05a03/The-Bubba-Gump-Shrimp-Co-Cookbook-Recipes-and-Reflections-from-FORREST-GUMP-by-Southern-Living-Inc-.pdf
    • http://muicuiu.dumb1.com/2a09a03a09a06a05/Gump-and-Comp-Forrest-Gump-2-by-Winston-Groom.pdf
    • http://muicuiu.dumb1.com/4a09a07a07a09a01/Augustus-by-John-Williams.pdf
    • http://muicuiu.dumb1.com/2a00a05a02a03a03/Augustus-by-John-Williams.pdf
    • http://muicuiu.dumb1.com/3a00a09a06a04/Augustus-by-John-Williams.pdf
    • http://muicuiu.dumb1.com/2a08a08a05a09a08/The-Vampire-of-Croglin-Grange-by-Augustus-John-Cuthbert-Hare.pdf
    • http://muicuiu.dumb1.com/1a08a06a07a07a02/Talk-Show-Confrontations-Pointed-Commentary-and-Off-Screen-Secrets-by-Dick-Cavett.pdf
    • http://muicuiu.dumb1.com/9a04a07a03a02a05/15-Secrets-Successful-People-Know-About-Time-Management-The-Productivity-Habits-of-7-Billionaires-13-Olympic-Athletes-29-Straight-A-Students-and-239-Entrepreneurs-by-Kevin-Kruse.pdf
    • http://muicuiu.dumb1.com/2a03a02a05a07a05/Warren-Buffett-s-Management-Secrets-Proven-Tools-for-Personal-and-Business-Success-by-Mary-Buffett.pdf
    • http://muicuiu.dumb1.com/1a01a02a06a09a09a03/Stress-Management-Secrets-From-High-Stress-Professionals-by-Art-Raddatz.pdf
    • http://muicuiu.dumb1.com/8a03a09a06a06a09/PRIVATE-DICK-Diary-of-the-Pornstar-Detective-by-John-Steel.pdf
    • http://muicuiu.dumb1.com/7a05a09a02a04a04/The-Compilations-of-Foresta-Gump-by-Foresta-Gump.pdf
    • http://muicuiu.dumb1.com/1a01a00a00a08a06a05/Handbook-for-Strategic-HR---Section-6-Change-Management-by-John-Vogelsang.pdf
    • http://muicuiu.dumb1.com/1a01a06a08a06a03a03/Management-of-Business-Logistics-A-Supply-Chain-Perspective-by-John-J-Coyle.pdf
    • http://muicuiu.dumb1.com/9a07a08a08a01a04/Public-Schools-Issues-in-Budgeting-and-Financial-Management-by-John-Augenblick.pdf
    • http://muicuiu.dumb1.com/1a00a03a04a06a06a01/Investment-Management-Security-Analysis-and-Portfolio-Management-by-V-K-Bhalla.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a07a05a03/Designing-for-Earthquakes-A-Manual-for-Architects-Fema-454-December-2006-Risk-Management-Series-by-Federal-Emergency-Management-Agency.pdf
    • http://muicuiu.dumb1.com/3a04a07a08a09a00/The-Collected-Stories-of-Philip-K-Dick-1-The-Short-Happy-Life-of-the-Brown-Oxford-by-Philip-K-Dick.pdf
    • http://muicuiu.dumb1.com/1a00a05a00a02a07/The-Collected-Stories-of-Philip-K-Dick-1-The-Short-Happy-Life-of-the-Brown-Oxford-by-Philip-K-Dick.pdf