Malicious PDF — malware analysis report

Static analysis result for SHA-256 da577593e337fd06…

MALICIOUS

PDF

14.0 KB Created: 2019-05-02 06:11:29 +01:00 Authoring application: mPDF 5.7
MD5: a808365974381ace064f4736cf11efdf SHA-1: b195ca2ac1df4142b37073f20e568dd04579886c SHA-256: da577593e337fd06acca237a5326ba7b6dc4e1d5846b036f5b7bc12ca86ea1bf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external PDF files. While the specific URLs appear to be benign, the sheer volume and structure suggest a link farm or SEO spamming technique, which can be used to distribute malicious content or manipulate search rankings. The ML classifier also flagged this PDF as malicious with high confidence.

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/4734733737737730/Daredevil-Visionaries-Frank-Miller-Vol-3-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/9730735738739737/Daredevil-by-Frank-Miller-amp-Klaus-Janson-Vol-1-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/4736732738732739/Daredevil-Born-Again-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/1731738737734731735/Daredevil-Mann-ohne-Furcht-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/4730736730737/Ronin-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/3734731738732/Batman-Year-One-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/2733739736732/Give-Me-Liberty-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/7739738731735734/Batman-Year-One-Book-amp-DVD-Set-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/2734732733731732/Ronin-The-Deluxe-Edition-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/2738738736737739/Batman-The-Dark-Knight-Returns-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/3730738731733737/Batman-The-Dark-Knight-Returns-4-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/1739733735738739/Dark-Knight-III-The-Master-Race-6-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/3733736737737732/Batman-The-Dark-Knight-Strikes-Again-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/3730738731739732/The-Dark-Knight-Returns-The-Last-Crusade-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/4734732732738738/Martha-Washington-Saves-the-World-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/8739730737734/Batman-The-Dark-Knight-Returns-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/3730738731733735/Batman-The-Dark-Knight-Returns-3-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/8731737733737735/Sin-City-Kaiken-takana-on-nainen-Sin-City-2-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/3736735736733/Sin-City-Vol-1-The-Hard-Goodbye-Sin-City-1-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/5735736736736730/Sin-City-Hell-and-Back-Sin-City-7-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/3733736737737732/Batman-The

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