Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bff4dff784acd6a…

MALICIOUS

PDF

16.6 KB Created: 2019-05-05 16:57:45 +01:00 Authoring application: mPDF 5.7
MD5: dfe4a6a7a2ad62cdcf137070c55e9367 SHA-1: f398c734854fabd9f2ae586cad9a7bfb1a911805 SHA-256: 6bff4dff784acd6a8f46fcf2be29f8bd0b536d2dae9e619cf7998b352e90af73
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

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/4a03a04a02a06/Madelaine-by-Joseph-Louis.pdf
    • http://muicuiu.dumb1.com/6a06a04a06a08a02/Les-Rois-de-France-Louis-XIII-Louis-XIV-Louis-XV-Louis-XVI-by-Jean-Christian-Petitfils.pdf
    • http://muicuiu.dumb1.com/7a08a07a05a06a04/Louis-Kahn-by-Joseph-Rykwert.pdf
    • http://muicuiu.dumb1.com/4a06a03a07a03a05/Bonds-of-Brass-Bonds-of-Brass-1-by-Emily-Skrutskie.pdf
    • http://muicuiu.dumb1.com/1a06a01a00a01a04/The-Jack-Vance-Reader-Emphyrio-The-Languages-of-Pao-The-Domains-of-Koryphon-by-Jack-Vance.pdf
    • http://muicuiu.dumb1.com/3a03a08a06a02a07/Goldie-Vance-1-Goldie-Vance-1-by-Hope-Larson.pdf
    • http://muicuiu.dumb1.com/1a06a06a04a08a06/Top-Brass-by-Elle-Marlow.pdf
    • http://muicuiu.dumb1.com/1a09a09a03a04/Sex-Charge-by-Perry-Brass.pdf
    • http://muicuiu.dumb1.com/1a08a07a00a02a06/My-Brother-Louis-Measures-Worms-And-Other-Louis-Stories-by-Barbara-Robinson.pdf
    • http://muicuiu.dumb1.com/8a03a04a03a02a05/Si-cle-de-Louis-XIV-Vol-1-Auquel-on-a-Joint-Un-Pr-cis-Du-Si-cle-de-Louis-XV-Et-Un-Autre-Morceau-D-Histoire-by-Voltaire.pdf
    • http://muicuiu.dumb1.com/4a05a04a02a06a05/Brass-Buttons-by-Sonya-C-Dodd.pdf
    • http://muicuiu.dumb1.com/3a08a00a08a08a01/Brass-Eagle-by-Margaret-Duffy.pdf
    • http://muicuiu.dumb1.com/4a01a09a00a05a08/Angel-of-Brass-by-Elaine-Corvidae.pdf
    • http://muicuiu.dumb1.com/8a00a01a00a02/The-Singing-Bowl-by-Joan-Logghe.pdf
    • http://muicuiu.dumb1.com/3a07a09a03a03a02/The-Brass-Dolphin-by-Caroline-Harvey.pdf
    • http://muicuiu.dumb1.com/2a05a04a06a07/Brass-Ring-by-Diane-Chamberlain.pdf
    • http://muicuiu.dumb1.com/2a08a00a03a03a06/The-Brass-Compass-by-Ellen-Butler.pdf
    • http://muicuiu.dumb1.com/3a04a04a03a06a09/The-Golden-Bowl-by-Henry-James.pdf
    • http://muicuiu.dumb1.com/7a06a01a02a01/Ride-the-River-Louis-Lamour-Collection-by-Louis-L-39-Amour.pdf
    • http://muicuiu.dumb1.com/4a01a08a03a04a08/Gears-of-Brass-Anthology-by-Jordan-Elizabeth.pdf

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