Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bc64c65876e274e…

MALICIOUS

PDF

16.8 KB Created: 2019-05-24 17:46:38 +01:00 Authoring application: mPDF 5.7
MD5: fd7fd8caf2fcfacc51b9980e920974b2 SHA-1: 57c63c559bc8f33e4599a4b42816c9d0a2fed78d SHA-256: 4bc64c65876e274ef10c89360ab681956a56f8da7dd46ea88442a8d78c7c7fd5
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/3731737735730736/Eighty-Days-Amber-Eighty-Days-Companion-1-by-Vina-Jackson.pdf
    • http://cefasfese.4pu.com/3731737735730735/Eighty-Days-White-Eighty-Days-Companion-2-by-Vina-Jackson.pdf
    • http://cefasfese.4pu.com/5735739736735/Around-the-World-in-Eighty-Days-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/8734735737736737/Around-the-World-in-Eighty-Days-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/4735731731732739/Around-the-World-in-Eighty-Days-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/1731738733737737737/Around-the-World-in-Eighty-Days-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/1730738733737737731/Around-the-World-in-Eighty-Days-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/8739733737730/Around-the-World-in-Eighty-Days-by-Michael-Palin.pdf
    • http://cefasfese.4pu.com/1730734731739737732/Around-the-World-in-Eighty-Days-with-eBook-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/4739732732738/One-Hundred-Eighty-Two-Days-in-Afghanistan-by-Ryan-Manganiello.pdf
    • http://cefasfese.4pu.com/5733733738739737/Around-the-World-in-Eighty-Days-amp-Five-Weeks-in-a-Balloon-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/2737734737732730/Around-the-World-in-Eighty-Days-amp-Five-Weeks-in-a-Balloon-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/7735735731732732/Around-the-World-in-Eighty-Days-Steampunk-Chronicles-Masterpiece-Collection-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/3739735730734732/Eighty-Days-Nellie-Bly-and-Elizabeth-Bisland-s-History-Making-Race-Around-the-World-by-Matthew-Goodman.pdf
    • http://cefasfese.4pu.com/7733731736731/Twenty-Thousand-Leagues-Under-the-Sea-The-Mysterious-Island-Journey-to-the-Centre-of-the-Earth-Around-the-World-in-Eighty-Days-by-Jules-Verne.pdf
    • http://cefasfese.4pu.com/6730736735737735/Nineteen-Eighty-Four-by-George-Orwell.pdf
    • http://cefasfese.4pu.com/1730733738736739733/Nineteen-Eighty-Four-by-George-Orwell.pdf
    • http://cefasfese.4pu.com/5732738735738/Nineteen-Eighty-Four-by-George-Orwell.pdf
    • http://cefasfese.4pu.com/6733733738733/Nineteen-Eighty-Four-by-George-Orwell.pdf
    • http://cefasfese.4pu.com/8730732739735736/Nineteen-Eighty-Four-by-George-Orwell.pdf
    • http://cefasfese.4pu.com/2737734737732730/Around-the-World-in-Eighty-Days-amp-Five-W

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