Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8958de140117b59…

MALICIOUS

PDF

16.6 KB Created: 2019-04-30 05:15:08 +01:00 Authoring application: mPDF 5.7
MD5: 1db2c6e312110484fd2f40e5509ad2a7 SHA-1: 89e4d7aada945078d20bd5ef85092b043bf692cd SHA-256: d8958de140117b593a37d9835ce2b393ed88c4521930af4c47dca6692cdab87a
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the structure suggests a potential for JavaScript execution to facilitate link traversal or other malicious actions.

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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