Malicious PDF — malware analysis report

Static analysis result for SHA-256 0550b4073fa01b44…

MALICIOUS

PDF

22.2 KB Created: 2019-04-30 07:59:15 +01:00 Authoring application: mPDF 5.7
MD5: 245383612ebe469e3e9c2f59f1048a47 SHA-1: 4428195c57241fff7c9ea812175e8b367d935a7d SHA-256: 0550b4073fa01b44b1da11d54184cdba82ef17aa52cde159919a27480140ccf6
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/7a02a02a02a04a09/The-Effectiveness-of-Cqi-in-Health-Care-by-Vahe-A-Kazandjian.pdf
    • http://muicuiu.dumb1.com/7a02a02a00a08a09/Epidemiology-of-Quality-by-Vahe-A-Kazandjian.pdf
    • http://muicuiu.dumb1.com/7a02a02a01a09a09/Healthcare-Performance-Measurement-Systems-Design-and-Evaluation-by-Vahe-A-Kazandjian.pdf
    • http://muicuiu.dumb1.com/8a05a09a00a09a06/Public-Health-Nursing-Population-Centered-Health-Care-in-the-Community-by-Marcia-Stanhope.pdf
    • http://muicuiu.dumb1.com/8a06a06a04a06a02/Connected-for-Health-Using-Electronic-Health-Records-to-Transform-Care-Delivery-by-Louise-L-Liang.pdf
    • http://muicuiu.dumb1.com/1a01a09a06a09a04a04/Fighting-for-Our-Health-The-Epic-Battle-to-Make-Health-Care-a-Right-in-the-United-States-by-Richard-Kirsch.pdf
    • http://muicuiu.dumb1.com/2a03a07a02a02a03/Nursing-Against-the-Odds-How-Health-Care-Cost-Cutting-Media-Stereotypes-and-Medical-Hubris-Undermine-Nurses-and-Patient-Care-by-Suzanne-Gordon.pdf
    • http://muicuiu.dumb1.com/1a09a01a04a04a09/Best-Care-Anywhere-Why-VA-Health-Care-Is-Better-Than-Yours-by-Phillip-Longman.pdf
    • http://muicuiu.dumb1.com/8a09a08a05a09a02/Gerontology-for-the-Health-Care-Professional-by-Regula-H-Robnett.pdf
    • http://muicuiu.dumb1.com/2a03a07a04a05a07/Death-Without-Cause-A-Health-Care-Mystery-by-Pamela-Triolo.pdf
    • http://muicuiu.dumb1.com/5a04a09a08a04a08/Communities-of-Health-Care-Justice-by-Charlene-Galarneau.pdf
    • http://muicuiu.dumb1.com/5a01a00a02a06a09/Pricing-the-Priceless-A-Health-Care-Conundrum-by-Joseph-P-Newhouse.pdf
    • http://muicuiu.dumb1.com/1a00a02a06a04a02a08/Tilt-the-Health-Care-Odds-in-Your-Favor-by-Herbert-Reichlin.pdf
    • http://muicuiu.dumb1.com/6a07a06a02a06a07/Health-Care-in-Saskatchewan-An-Analytical-Profile-by-GREGORY-MARCHILDON.pdf
    • http://muicuiu.dumb1.com/9a09a05a03a04a02/Doing-a-Literature-Review-in-Health-and-Social-Care-A-Practical-Guide-by-AVEYARD.pdf
    • http://muicuiu.dumb1.com/1a00a08a05a07a09a01/Btec-First-Health-and-Social-Care-Student-Book-by-Laura-Asbridge.pdf
    • http://muicuiu.dumb1.com/8a00a06a08a09a03/The-Innovator-s-Prescription-A-Disruptive-Solution-for-Health-Care-by-Clayton-M-Christensen.pdf
    • http://muicuiu.dumb1.com/1a00a06a06a07a03a01/Client-or-Patient-Power-amp-Related-Concepts-in-Health-Care-by-Gregory-Hacke.pdf
    • http://muicuiu.dumb1.com/9a03a01a06a07a03/Landmark-The-Inside-Story-of-America-s-New-Health-Care-Law-and-What-It-Means-for-Us-All-by-The-Washington-Post.pdf
    • http://muicuiu.dumb1.com/6a02a02a03a04a00/ePatient-2015---15-Surprising-Trends-Changing-Health-Care-by-Rohit-Bhargava.pdf