Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b97c967eb45ca2e…

MALICIOUS

PDF

28.9 KB Created: 2019-04-30 03:29:54 +01:00 Authoring application: mPDF 5.7
MD5: 4ce66beffe6fac9b2ca72458e474375d SHA-1: c33b9fecd839e2086ebf5372ab5d94f870551e69 SHA-256: 2b97c967eb45ca2e91af931136174df2496b7947a62ecc67b3631a9e18bc2b7f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. While most of these links appear to point to benign content, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to distribute further malicious content. The ML_NYX_PDF_MALICIOUS classifier also flagged this file with high confidence. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9700

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/8a07a01a06a08/Our-Mathematical-Universe-My-Quest-for-the-Ultimate-Nature-of-Reality-by-Max-Tegmark.pdf
    • http://muicuiu.dumb1.com/6a01a05a05a05a00/The-Elegant-Universe-Superstrings-Hidden-Dimensions-and-the-Quest-for-the-Ultimate-Theory-by-Brian-Greene.pdf
    • http://muicuiu.dumb1.com/3a07a09a01a09/The-Elegant-Universe-Superstrings-Hidden-Dimensions-and-the-Quest-for-the-Ultimate-Theory-by-Brian-Greene.pdf
    • http://muicuiu.dumb1.com/5a09a07a08a07a00/Notre-univers-math-matique-En-qu-te-de-la-nature-ultime-du-R-el-by-Max-Tegmark.pdf
    • http://muicuiu.dumb1.com/7a01a09a05a05a03/Three-New-Olympus-Gods-and-Their-Universe-Socrates-Plato-and-Aristotle-on-Mt-Olympus-Explore-the-Nature-and-Evolution-of-the-Universe-Based-on-Our-21st-Century-Knowledge-by-Stephen-R-Champi.pdf
    • http://muicuiu.dumb1.com/2a06a06a07a05a03/Nature-s-Numbers-The-Unreal-Reality-Of-Mathematics-by-Ian-Stewart.pdf
    • http://muicuiu.dumb1.com/1a07a06a01a04a05/Post-High-School-Reality-Quest-by-Meg-Eden.pdf
    • http://muicuiu.dumb1.com/1a01a01a04a06a02a08/Quantum-Structures-and-the-Nature-of-Reality-The-Indigo-Book-of-einstein-Meets-Magritte-by-Diederik-Aerts.pdf
    • http://muicuiu.dumb1.com/5a02a07a05a09/From-Eternity-to-Here-The-Quest-for-the-Ultimate-Theory-of-Time-by-Sean-Carroll.pdf
    • http://muicuiu.dumb1.com/8a03a02a09a01a09/Conjuring-the-Universe-The-Origins-of-the-Laws-of-Nature-by-Peter-Atkins.pdf
    • http://muicuiu.dumb1.com/9a03a02a02a07a08/The-Lifebox-the-Seashell-and-the-Soul-What-Gnarly-Computation-Taught-Me-About-Ultimate-Reality-the-Meaning-of-Life-and-How-to-Be-Happy-by-Rudy-Rucker.pdf
    • http://muicuiu.dumb1.com/3a06a06a08a02a07/Nature-s-Destiny-How-the-Laws-of-Biology-Reveal-Purpose-in-the-Universe-by-Michael-Denton.pdf
    • http://muicuiu.dumb1.com/5a07a01a05a06a02/The-Constants-of-Nature-The-Numbers-That-Encode-the-Deepest-Secrets-of-the-Universe-by-John-D-Barrow.pdf
    • http://muicuiu.dumb1.com/2a05a01a03a00a04/Biocentrism-How-Life-and-Consciousness-Are-the-Keys-to-Understanding-the-True-Nature-of-the-Universe-by-Robert-Lanza.pdf
    • http://muicuiu.dumb1.com/6a03a01a05a09a03/The-Nature-of-Reality-Original-Hilarion-Series-Book-1-by-Hilarion.pdf
    • http://muicuiu.dumb1.com/1a00a09a01a01a02a02/Life-3-0-Mens-zijn-in-het-tijdperk-van-kunstmatige-intelligentie-by-Max-Tegmark.pdf
    • http://muicuiu.dumb1.com/3a04a01a05a04a02/Beyond-Ecophobia-Reclaiming-the-Heart-in-Nature-Education-Nature-Literacy-Series-Vol-1-Nature-Literacy-by-David-Sobel.pdf
    • http://muicuiu.dumb1.com/1a00a06a05a06a08a02/Multi-Layered-Reality-The-Most-Comprehensive-Perspective-of-Reality-That-There-Is-by-Thomas-Kutscher.pdf
    • http://muicuiu.dumb1.com/4a00a01a09a06a07/The-13th-Reality-The-Journal-of-Curious-Letters-The-Hunt-for-Dark-Infinity-The-13th-Reality-1-2-by-James-Dashner.pdf
    • http://muicuiu.dumb1.com/1a01a04a04a05a06a02/The-Great-Book-of-Baseball-Knowledge-The-Ultimate-Test-for-the-Ultimate-Fan-by-David-Nemec.pdf
    • http://muicuiu.dumb1.com/7a0

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