Malicious PDF — malware analysis report

Static analysis result for SHA-256 15b0e1c7d3d6e6be…

MALICIOUS

PDF

14.9 KB Created: 2019-05-02 06:49:41 +01:00 Authoring application: mPDF 5.7
MD5: 6ea6d95d5cfa5f9dd413dc3c9c973b7a SHA-1: c0a68504277f034a48bbd29f4ed3de0264eb9c48 SHA-256: 15b0e1c7d3d6e6be7f94b0b06593862015485d697d5dc4d1d0842e84a3b8e46c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which are structured as numeric slugs and point to book titles, suggesting a link farm for SEO manipulation or to host potentially malicious content. The ML classifier also flagged this PDF as malicious. While the URLs themselves are currently marked as benign, the sheer volume and structure indicate a suspicious attempt to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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://cefasfese.4pu.com/1731734730734738730/Scorch-Black-Inferno-4-by-K-T-Fisher.pdf
    • http://cefasfese.4pu.com/1731734730732734737/Scorch-Road-Scorch-1-by-Toby-Neal.pdf
    • http://cefasfese.4pu.com/1730739730732735739/Black-Sails-Disco-Inferno-by-Andrez-Bergen.pdf
    • http://cefasfese.4pu.com/3737734736735734/X-Men-Inferno-Vol-1-X-Men-Inferno-1-by-Louise-Simonson.pdf
    • http://cefasfese.4pu.com/3733734730733739/Gabriel-s-Inferno-Gabriel-s-Inferno-1-by-Sylvain-Reynard.pdf
    • http://cefasfese.4pu.com/1733738730733739/The-Measure-of-Her-Powers-An-M-F-K-Fisher-Reader-by-M-F-K-Fisher.pdf
    • http://cefasfese.4pu.com/1731734730734737737/Scorch-by-Marc-Paoletti.pdf
    • http://cefasfese.4pu.com/2733731737733738/Swords-of-Haven-The-Adventures-of-Hawk-and-Fisher-Hawk-and-Fisher-1-3-by-Simon-R-Green.pdf
    • http://cefasfese.4pu.com/1731734730734734734/Scorch-The-Tribe-1-by-Terra-Wolf.pdf
    • http://cefasfese.4pu.com/1731734730733737737/Scorch-City-by-Toby-Ball.pdf
    • http://cefasfese.4pu.com/2738735731731732/Scorch-The-MacKenzie-Family-11-by-Liliana-Hart.pdf
    • http://cefasfese.4pu.com/1731734730732735731/Scorch-Midnight-Fire-4-by-Kaitlyn-Davis.pdf
    • http://cefasfese.4pu.com/1731734730733737732/Smoke-Road-Scorch-3-by-Toby-Neal.pdf
    • http://cefasfese.4pu.com/8733737730735/Philippa-Fisher-and-the-Dream-Maker-s-Daughter-Philippa-Fisher-2-by-Liz-Kessler.pdf
    • http://cefasfese.4pu.com/3731735736734739/The-Scorch-Trials-Maze-Runner-2-by-James-Dashner.pdf
    • http://cefasfese.4pu.com/2736730733734736/The-Scorch-Trials-Maze-Runner-2-by-James-Dashner.pdf
    • http://cefasfese.4pu.com/3732736731733/The-Scorch-Trials-The-Maze-Runner-2-by-James-Dashner.pdf
    • http://cefasfese.4pu.com/8733739737733/Philippa-Fisher-and-the-Fairy-s-Promise-Philippa-Fisher-3-by-Liz-Kessler.pdf
    • http://cefasfese.4pu.com/3736738739730732/Hawk-amp-Fisher-Hawk-amp-Fisher-1-by-Simon-R-Green.pdf
    • http://cefasfese.4pu.com/3734734733737736/Into-the-Inferno-by-Earl-Emerson.pdf

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