Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c3425b0f6ee36b7…

MALICIOUS

PDF

27.0 KB Created: 2019-04-30 05:51:57 +01:00 Authoring application: mPDF 5.7
MD5: 66d729a7d2a0890d83d7e392d41c3ed4 SHA-1: 86a00476d8c3d0e4b0374652931b0d1b941dc047 SHA-256: 4c3425b0f6ee36b7f9a0cb5996fb5775298f0b4d0d3044cec282d08504111ebb
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external URLs, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a deeper analysis of its specific lure. The primary attack pattern observed is the mass linking to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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/5a03a02a05a04/The-One-World-Schoolhouse-Education-Reimagined-by-Salman-Khan.pdf
    • http://muicuiu.dumb1.com/5a09a04a07a06a09/Qajar-Dynasty-Aga-Khan-III-Prince-Aly-Khan-Mohammad-Mosaddegh-Aga-Khan-IV-Prince-Sadruddin-Aga-Khan-Marjane-Satrapi-by-Source-Wikipedia.pdf
    • http://muicuiu.dumb1.com/6a00a06a09a09a03/The-Raj-at-War-A-People-s-History-of-India-s-Second-World-War-by-Yasmin-Khan.pdf
    • http://muicuiu.dumb1.com/3a09a05a09a01a03/Genghis-Khan-A-History-of-the-World-Conqueror-by-Ata-Malik-Juvaini.pdf
    • http://muicuiu.dumb1.com/1a03a09a09a09a09/Conqueror-of-the-World-The-Life-of-Chingis-Genghis-Khan-by-Ren-Grousset.pdf
    • http://muicuiu.dumb1.com/8a02a06a07a01a02/Education-for-Awakening-An-Eastern-Approach-to-Holistic-Education-Foundations-of-Holistic-Education-Series-by-Yoshiharu-Nakagawa.pdf
    • http://muicuiu.dumb1.com/6a03a08a02a09a09/The-Life-s-Too-Short-New-Writing-from-Pakistan-Edited-by-Faiza-S-Khan-Aysha-Raja-by-Faiza-S-Khan.pdf
    • http://muicuiu.dumb1.com/4a09a00a02a03a00/The-One-Room-Schoolhouse-Stories-About-the-Boys-by-Jim-Heynen.pdf
    • http://muicuiu.dumb1.com/1a00a06a07a05a09a03/Solitude-and-Splendor-Living-in-the-Schoolhouse-by-Maria-Termini.pdf
    • http://muicuiu.dumb1.com/8a04a04a09a09a04/The-Chaka-Khan-Songbook-Piano-Vocal-Guitar-by-Chaka-Khan.pdf
    • http://muicuiu.dumb1.com/6a09a03a03a00a05/What-Works-in-Girls-Education-Evidence-for-the-World-s-Best-Investment-by-Gene-B-Sperling.pdf
    • http://muicuiu.dumb1.com/5a00a04a00a05a02/The-Teaching-Gap-Best-Ideas-from-the-World-s-Teachers-for-Improving-Education-in-the-Classroom-by-James-W-Stigler.pdf
    • http://muicuiu.dumb1.com/1a01a09a06a06a00a02/Rural-Education-for-the-Twenty-First-Century-Identity-Place-and-Community-in-a-Globalizing-World-by-Kai-A-Schafft.pdf
    • http://muicuiu.dumb1.com/2a04a05a04a07a03/Bound-to-Be-a-Groom-Regency-Reimagined-1-by-Megan-Mulry.pdf
    • http://muicuiu.dumb1.com/9a02a02a02a04/Reimagined-How-amazing-people-design-lives-they-love-by-Ian-Breck.pdf
    • http://muicuiu.dumb1.com/6a00a02a03a09a01/The-Case-Against-Education-Why-the-Education-System-Is-a-Waste-of-Time-and-Money-by-Bryan-Caplan.pdf
    • http://muicuiu.dumb1.com/7a07a00a02a03a06/Education-and-Social-Change-Contours-in-the-History-of-American-Education-by-John-L-Rury.pdf
    • http://muicuiu.dumb1.com/1a00a07a04a02a06a09/Diversification-Of-European-Systems-Of-Higher-Education-Studies-In-Comparative-Education-Bd-3-by-Claudius-Gellert.pdf
    • http://muicuiu.dumb1.com/8a07a00a09a09a07/Command-Culture-Officer-Education-in-the-U-S-Army-and-the-German-Armed-Forces-1901-1940-and-the-Consequences-for-World-War-II-by-J-rg-Muth.pdf
    • http://muicuiu.dumb1.com/1a00a00a04a01a01a07/Anthropologists-Approaching-Education-Papers-Presented-at-the-Symposium-Anthropology-of-Education-Held-at-the-Occasion-of-the-1981-Intercongress-of-t-by-A-Kater.pdf
    • http://muicuiu.dumb1.com/1a03a09a09a09a09/Conqueror-of-the-World-The-Life-of-Chingis-Genghis-Khan-by-Ren-Grousset

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