Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ee199c26958d3b…

MALICIOUS

PDF

21.8 KB Created: 2019-04-30 05:18:05 +01:00 Authoring application: mPDF 5.7
MD5: 4570a9af7159c2904cd74bd6d088aae0 SHA-1: bf8ba7ab56753d3450086704074424ce69e81df2 SHA-256: 58ee199c26958d3b5625c7b2f7630cda9a58144419b6c3923116f21707950191
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 documents, as indicated by the PDF_SEO_LINK_FARM heuristic. While the ML classifier strongly suggests maliciousness, the specific intent beyond link farming is unclear due to the lack of executable scripts. The embedded URLs themselves are not directly malicious but are part of a larger scheme. The attack pattern is inferred from the structure and the heuristic firing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://seasasac.lflinkup.com/2da8da1da6da0/Josiah-Royce-From-Grass-Valley-to-Harvard-by-Robert-V-Hine.pdf
    • http://seasasac.lflinkup.com/4da9da5da3da7da3/The-Cowboy-s-New-Heart-Grass-Valley-Cowboys-5-by-Shanna-Hatfield.pdf
    • http://seasasac.lflinkup.com/4da9da5da8da3da5/The-Cowboy-s-Spring-Romance-Grass-Valley-Cowboys-2-by-Shanna-Hatfield.pdf
    • http://seasasac.lflinkup.com/1da8da9da7da7da3/The-Grass-is-Never-Greener-by-Robert-Thomas-Allen.pdf
    • http://seasasac.lflinkup.com/1da5da0da0da3da4/Valley-of-the-Moon-The-Diary-of-Mar-a-Rosal-a-de-Milagros-Sonoma-Valley-Alta-Valley-California-1846-by-Sherry-Garland.pdf
    • http://seasasac.lflinkup.com/1da6da9da3da1da8/Articles-on-Chaos-Magicians-Including-Peter-J-Carroll-Pat-Mills-Robert-Anton-Wilson-Genesis-P-Orridge-Grant-Morrison-Ramsey-Dukes-Phil-Hine-John-Balance-Jaq-D-Hawkins-Jan-Fries-Ian-Read-Musician-Ralph-Tegtmeier-by-Hephaestus-Books.pdf
    • http://seasasac.lflinkup.com/1da1da6da5da5da5da0/The-Judas-Valley-by-Robert-Silverberg.pdf
    • http://seasasac.lflinkup.com/7da7da4da2da9da7/Illustrated-Catalogue-of-the-Museum-of-Comparative-Zoology-at-Harvard-College-Issue-4-by-Harvard-University-Museum-of-Comparative-Zoology.pdf
    • http://seasasac.lflinkup.com/1da0da2da9da4da4da9/G-nter-Grass-In-Kupfer-auf-Stein-Das-Graphische-Werk-by-G-nter-Grass.pdf
    • http://seasasac.lflinkup.com/1da1da3da0da2da0da4/Klang-Valley-Golf-Clubs-and-Courses-in-Klang-Valley-Klang-River-Transport-in-the-Klang-Valley-Kuala-Lumpur-Rapidkl-Buses-Bangsar-by-Source-Wikipedia.pdf
    • http://seasasac.lflinkup.com/5da3da8da1da2da0/Snow-Valley-Heroes-a-Christmas-Tale-Planet-of-the-Dogs-3-by-Robert-McCarty.pdf
    • http://seasasac.lflinkup.com/2da9da8da8da9da2/The-Man-Who-Laughs-by-David-Hine.pdf
    • http://seasasac.lflinkup.com/2da5da2da5da9da4/Strange-Embrace-by-David-Hine.pdf
    • http://seasasac.lflinkup.com/9da4da1da1da7da1/Lewis-Hine-by-Mary-Panzer.pdf
    • http://seasasac.lflinkup.com/6da3da5da5da2da8/Edge-of-Spider-Verse-by-David-Hine.pdf
    • http://seasasac.lflinkup.com/4da4da2da1da7da7/Spider-Man-Noir-Premiere-by-David-Hine.pdf
    • http://seasasac.lflinkup.com/1da0da4da9da6da2/Stories-I-Shouldn-t-Tell-by-James-Josiah.pdf
    • http://seasasac.lflinkup.com/8da8da5da2da7da4/The-Moral-Preparation-of-the-World-for-the-Coming-of-Christ-A-Dissertation-by-Joseph-Hine-Rylance.pdf
    • http://seasasac.lflinkup.com/9da7da0da6da6da4/Illuminati-666-Book-2-by-William-Josiah-Sutton.pdf
    • http://seasasac.lflinkup.com/2da9da4da0da2da9/The-Hod-King-The-Books-of-Babel-3-by-Josiah-Bancroft.pdf
    • http://seasasac.lflinkup.com/1da6da9da3da1da8/Articles-on-Chaos-Magicians-Including-Peter-J-Carroll-Pat-Mills-Robert-Anton-Wilson-Genesis-P-Orridge-Grant-Morrison-Ramsey-Du

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