Malicious PDF — malware analysis report

Static analysis result for SHA-256 71ef96c9bbe00128…

MALICIOUS

PDF

27.0 KB Created: 2019-05-02 00:50:29 +01:00 Authoring application: mPDF 5.7
MD5: 44e1a4d429250d47adc5436ab4ed571f SHA-1: 52be27fef792990622a3feaa9540446e08749d38 SHA-256: 71ef96c9bbe0012849284c2ea73af0ca3edc52a058ffc1a8e9924c6d86fba62e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a link farm, which is a common technique for distributing malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the presence of numerous links suggests an attempt to redirect users to malicious sites, likely for downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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/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

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