Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d6bee361d82e73…

MALICIOUS

PDF

34.8 KB Created: 2019-04-30 04:09:04 +01:00 Authoring application: mPDF 5.7
MD5: cb5f1203d1e15cf3cd3e3c10412487b5 SHA-1: ee4106c007aa895c5f5258a55f102e3ec4a66c26 SHA-256: 84d6bee361d82e7366bc060d4f932b4ca8806864a119a6aae5add04290e4a28f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO spam or to distribute further malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, preventing a more detailed analysis of its specific intent beyond link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9636

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/9a07a01a00a08/College-Shortcuts-An-Express-Undergraduate-Degree-with-Zero-Student-Loans-Reviews-of-The-Best-Colleges-Free-Online-Courses-College-Transfers-and-More-Planning-and-Career-Counseling-Series-by-Padma-Subramanian.pdf
    • http://muicuiu.dumb1.com/5a00a07a07a01/Beer-and-Circus-How-Big-Time-College-Sports-Has-Crippled-Undergraduate-Education-by-Murray-A-Sperber.pdf
    • http://muicuiu.dumb1.com/7a05a09a03a09a08/Covenant-College-The-Complete-Series-Covenant-College-1-5-by-Amanda-M-Lee.pdf
    • http://muicuiu.dumb1.com/8a01a06a07a05a02/Wolfson-College-Cambridge-Alumni-of-Wolfson-College-Cambridge-Fellows-of-Wolfson-College-Cambridge-Presidents-of-Wolfson-College-by-Source-Wikipedia.pdf
    • http://muicuiu.dumb1.com/6a05a08a08a01a08/Elinor-s-College-Career-by-Julia-Augusta-Schwartz.pdf
    • http://muicuiu.dumb1.com/7a05a09a03a09a06/Chicken-Soup-for-the-College-Soul-Inspiring-and-Humorous-Stories-About-College-by-Jack-Canfield.pdf
    • http://muicuiu.dumb1.com/9a07a08a09a07/Driven-to-Succeed-How-to-Start-Your-Career-after-College-by-Jason-Navallo.pdf
    • http://muicuiu.dumb1.com/1a01a07a03a02a01/Behind-that-Shiny-Resume-jottings-of-a-troubled-college-student-by-Jasmine-Yow.pdf
    • http://muicuiu.dumb1.com/6a03a08a08a06a09/Student-s-Solutions-Manual-to-Accompany-College-Algebra-with-Trigonometry-by-Raymond-A-Barnett.pdf
    • http://muicuiu.dumb1.com/8a03a09a09a09a03/How-to-Learn-Anything-The-Power-of-Massive-Open-Online-Courses-MOOCS-Quick-Easy-Tips-to-Take-Your-First-MOOCs-and-Include-Them-In-Your-C-V-MOOCS-Beginner-Guide-for-Every-Student-by-Jesuloba-Eyitayo.pdf
    • http://muicuiu.dumb1.com/8a09a00a06a07a05/Equipment-of-a-Shunt-Motor-with-Interpoles-Thesis-for-the-Degree-of-Bachelor-of-Science-in-Electrical-Engineering-College-of-Engineering-University-of-Illinois-Presented-June-1907-by-Henry-George-Treichel.pdf
    • http://muicuiu.dumb1.com/8a05a07a08a04a07/Pustule-Maligne-An-Inaugural-Essay-Submitted-to-the-Examination-of-Alexander-H-Stevens-President-and-the-Trustees-and-Professors-of-the-College-of-Physicians-and-Surgeons-of-the-University-of-the-State-of-New-York-for-the-Degree-of-Doctor-in-Medicine-by-Daniel-Wadsworth-Wainwright.pdf
    • http://muicuiu.dumb1.com/9a02a07a01a01a09/Student-Solutions-Manual-for-Kaufmann-Schwitters-Algebra-for-College-Students-9th-by-Jerome-E-Kaufmann.pdf
    • http://muicuiu.dumb1.com/8a07a06a09a06a07/From-the-Yalu-to-Port-Arthur-An-Epitome-of-the-First-Period-of-the-Russo-Japanese-War---War-College-Series-by-Oliver-Ellsworth-Wood.pdf
    • http://muicuiu.dumb1.com/2a09a05a06a01a06/Lili-s-First-Fantasy---a-U-Coeds-Novella-Can-She-Indulge-Her-Most-Intimate-Desire-The-U-Coeds-College-Erotica-Romance-Series-Book-1-by-Amie-Iser.pdf
    • http://muicuiu.dumb1.com/6a07a05a08a02a08/Encyclopedia-of-Counseling-Package-Encyclopedia-of-Counseling-Master-Review-and-Tutorial-for-the-National-Counselor-Examination-State-Counseling-Preparation-Comprehensive-Examination-by-Howard-Rosenthal.pdf
    • http://muicuiu.dumb1.com/1a01a02a09a04a09a00/Career-and-Life-Planning-with-Gay-Lesbian-and-Bisexual-Persons-by-Susan-Gelberg.pdf
    • http://muicuiu.dumb1.com/2a05a07a02a07a08/What-the-Best-College-Teachers-Do-by-Ken-Bain.pdf
    • http://muicuiu.dumb1.com/7a05a09a04a03a01/Love-amp-College-by-C-M-Owens.pdf
    • http://muicuiu.dumb1.com/2a05a00a04a02a01/College-Guy-Cookbook-by-John-Blandly.pdf

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