Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e61aba7b54bf3a…

MALICIOUS

PDF

15.4 KB Created: 2019-05-02 01:40:12 +01:00 Authoring application: mPDF 5.7
MD5: 663006d4f423bdf528f3ccffb889d355 SHA-1: 0e39ac1ccc0b971ac9883f49435695da0a8f76a1 SHA-256: 67e61aba7b54bf3ae56bf6d88835acac519d881fbe0e5579ca935ffbd63f4a31
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links disguised as book titles, forming a link farm. While no scripts were extracted, the heuristic 'PDF_SEO_LINK_FARM' indicates a malicious intent to redirect users to potentially harmful content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/4a08a05a07a09a05/Hip-Hop-Apsara-Ghosts-Past-and-Present-by-Anne-Elizabeth-Moore.pdf
    • http://muicuiu.dumb1.com/6a01a05a00a03a06/Present-Past-Past-Present-by-Eug-ne-Ionesco.pdf
    • http://muicuiu.dumb1.com/3a07a04a00a07a04/Threadbare-Clothes-Sex-and-Trafficking-by-Anne-Elizabeth-Moore.pdf
    • http://muicuiu.dumb1.com/3a00a03a04a05a04/Past-And-Present-by-Thomas-Carlyle.pdf
    • http://muicuiu.dumb1.com/3a01a00a09a07a00/Past-amp-Present-Collide-by-Amanda-Kay.pdf
    • http://muicuiu.dumb1.com/6a01a06a03a04a00/Past-and-Present-by-Thomas-Carlyle.pdf
    • http://muicuiu.dumb1.com/2a06a04a01a01a00/Poems-of-the-Past-and-the-Present-by-Thomas-Hardy.pdf
    • http://muicuiu.dumb1.com/2a05a07a04a03a00/When-Past-Comes-to-Present-Beckett-Investigations-1-by-R-G-Green.pdf
    • http://muicuiu.dumb1.com/1a09a02a02a09a09/Past-Present-and-Murder-by-Hugh-Pentecost.pdf
    • http://muicuiu.dumb1.com/6a01a06a03a00a00/Leadership-Past-Present-amp-Future-by-Carlos-Rivera.pdf
    • http://muicuiu.dumb1.com/3a04a06a00a05a01/All-the-Rage-The-Boondocks-Past-and-Present-by-Aaron-McGruder.pdf
    • http://muicuiu.dumb1.com/4a01a07a07a06a05/The-Mayan-Culture-Past-and-Present-by-Gary-Wonning.pdf
    • http://muicuiu.dumb1.com/1a01a08a05a06a09a02/Columbus-Past-Present-and-Future-by-Brad-Pauquette.pdf
    • http://muicuiu.dumb1.com/2a03a01a07a07a01/Ghosts-of-Halloweens-Past-by-Ingrid-Seymour.pdf
    • http://muicuiu.dumb1.com/5a02a02a07a03a04/The-Republican-Option-in-Canada-Past-and-Present-by-David-E-Smith.pdf
    • http://muicuiu.dumb1.com/4a06a08a08a03a07/Heart-of-Europe-The-Past-in-Poland-s-Present-by-Norman-Davies.pdf
    • http://muicuiu.dumb1.com/1a01a08a02a00a03a06/Global-Studies-Civilizations-of-the-Past-and-Present-R-458-W-by-Henry-Brum.pdf
    • http://muicuiu.dumb1.com/1a02a04a08a05a09/Wild-Dogs-Past-amp-Present-by-Kelly-Milner-Halls.pdf
    • http://muicuiu.dumb1.com/3a02a04a01a02a07/The-London-Colouring-Book-Past-and-Present-by-The-History-Press.pdf
    • http://muicuiu.dumb1.com/3a07a06a09a02a00/Truth-and-Lies-Past-and-Present-Katy-Lily-1-by-Katherine-Rochholz.pdf

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