Malicious PDF — malware analysis report

Static analysis result for SHA-256 44169f69e0d973a2…

MALICIOUS

PDF

18.4 KB Created: 2019-05-02 06:59:33 +01:00 Authoring application: mPDF 5.7
MD5: f81f4ad5934cfac74f10443c4401b446 SHA-1: 8eb0a4eda82e53ddf225aa726f8d01892d178f10 SHA-256: 44169f69e0d973a28608bb98e3adb9df04184ca17525b736e88d190a0dbdd587
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm. While the specific URLs extracted appear benign, the heuristic 'PDF_SEO_LINK_FARM' indicates a malicious intent to manipulate search engine results or redirect users. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/1731730739730731733/The-Living-Thoughts-of-Schopenhauer-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/1731730738737733736/Essays-of-Schopenhauer-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/6734732737734/The-Art-of-Always-Being-Right-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/6734730730739/The-Wisdom-of-Life-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/1731730738737738736/The-Basis-of-Morality-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/1731735739737736738/Metaphysik-der-Geschlechts-Liebe-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/4736736739734/The-World-as-Will-and-Representation-Volume-1-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/1731730738737738737/The-World-as-Will-and-Idea-Abridged-in-1-Vol-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/4732734734733737/The-Wisdom-of-Life-and-Counsels-and-Maxims-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/1731730739730730738/Arthur-Schopenhauer-The-World-as-Will-and-Idea-by-Irwin-Edman.pdf
    • http://cefasfese.4pu.com/1731730738739732739/Suffering-Suicide-and-Immortality-Eight-Essays-from-The-Parerga-by-Arthur-Schopenhauer.pdf
    • http://cefasfese.4pu.com/1730735736739737736/His-Grace-Is-Sufficient-by-Susan-Bahner.pdf
    • http://cefasfese.4pu.com/3739736735734731/Give-Me-Reason-Reason-1-by-Zoey-Derrick.pdf
    • http://cefasfese.4pu.com/8735734734732735/Reading-Backwards-Figural-Christology-and-the-Fourfold-Gospel-Witness-by-Richard-B-Hays.pdf
    • http://cefasfese.4pu.com/1734738736738731/A-Reason-to-Breathe-Reason-1-by-C-P-Smith.pdf
    • http://cefasfese.4pu.com/2732739733736730/The-Urban-Homestead-Your-Guide-to-Self-sufficient-Living-in-the-Heart-of-the-City-Process-Self-Reliance-Series-by-Kelly-Coyne.pdf
    • http://cefasfese.4pu.com/9731733738737/The-Further-Letters-Of-Henry-Root-by-Henry-Root.pdf
    • http://cefasfese.4pu.com/1730733733733732730/Rise-of-the-Korean-Holiness-Church-in-Relation-to-the-American-Holiness-Movement-Wesley-s-Scriptural-Holiness-and-the-Fourfold-Gospel-by-Meesaeng-Lee-Choi.pdf
    • http://cefasfese.4pu.com/1731730738737738733/Schopenhauer-by-Patrick-L-Gardiner.pdf
    • http://cefasfese.4pu.com/1731730738739733734/Schopenhauer-by-Margrieta-Beer.pdf
    • http://cefasfese.4pu.com/173173073873973273

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