Malicious PDF — malware analysis report

Static analysis result for SHA-256 002d40e9f00d79a7…

MALICIOUS

PDF

17.1 KB Created: 2020-01-03 01:54:00 +00:00 Authoring application: mPDF 5.7
MD5: 1db532d2d5abe7e2c8e0cdeb03e06294 SHA-1: 8a150410ab52ebc0d159a12a944260cd7f43517c SHA-256: 002d40e9f00d79a75d058417787eefaf90412e95e147bcb549914fb7abcbda79
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to host malicious content. While the ML classifier flagged this as malicious, the specific intent beyond linking is unclear as no scripts were extracted. The primary attack pattern observed is the creation of a link farm, likely as a lure or to distribute further content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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/1733739734735735/The-Last-Pair-of-Ears-by-Mary-F-McDonough.pdf
    • http://cefasfese.4pu.com/5738732736737/Lessons-From-the-Mountain-by-Mary-McDonough.pdf
    • http://cefasfese.4pu.com/1730734731732739733/Hohlenmalerei-Hohle-Von-Lascaux-Frankokantabrische-Hohlenkunst-Hohlenarchitektur-in-Kappadokien-Chauvet-Hohle-Hohle-Von-Pair-Non-Pair-by-Quelle-Wikipedia.pdf
    • http://cefasfese.4pu.com/2730734732732/Whispers-on-the-Prairie-Pioneer-Promises-1-by-Vickie-McDonough.pdf
    • http://cefasfese.4pu.com/2730738735735736/The-Cats-in-the-Doll-Shop-by-Yona-Zeldis-McDonough.pdf
    • http://cefasfese.4pu.com/5730739735733736/The-Doll-with-the-Yellow-Star-by-Yona-Zeldis-McDonough.pdf
    • http://cefasfese.4pu.com/5734739733731738/Guy-Debord-and-the-Situationist-International-Texts-and-Documents-by-Tom-McDonough.pdf
    • http://cefasfese.4pu.com/1730731736736736/Platoon-Leader-A-Memoir-of-Command-in-Combat-by-James-R-McDonough.pdf
    • http://cefasfese.4pu.com/2733732735737739/Tammy-Wynette-Tragic-Country-Queen-by-Jimmy-McDonough.pdf
    • http://cefasfese.4pu.com/2731735736735733/The-Ghastly-One-The-Sex-Gore-Netherworld-of-Filmmaker-Andy-Milligan-by-Jimmy-McDonough.pdf
    • http://cefasfese.4pu.com/1730737730733732/Wolf-by-the-Ears-by-Ann-Rinaldi.pdf
    • http://cefasfese.4pu.com/4734739737738736/Ears-amp-Bubbles-by-Bobby-Burgess.pdf
    • http://cefasfese.4pu.com/2736737735731737/Why-Elephants-Have-Big-Ears-by-Chris-Lavers.pdf
    • http://cefasfese.4pu.com/4731738738738732/On-Deaf-Ears-by-Penelope-Rivers.pdf
    • http://cefasfese.4pu.com/4731737731735739/How-Jackrabbit-Got-His-Very-Long-Ears-by-Heather-Irbinskas.pdf
    • http://cefasfese.4pu.com/4733737739731733/Why-Mosquitoes-Buzz-in-People-s-Ears-by-Bobby-Norfolk.pdf
    • http://cefasfese.4pu.com/2737738730736736/The-Walls-Have-Ears-College-Fun-and-Gays-3-by-Erica-Pike.pdf
    • http://cefasfese.4pu.com/4737737732735/Why-Mosquitoes-Buzz-in-People-s-Ears-by-Verna-Aardema.pdf
    • http://cefasfese.4pu.com/8737736738732735/One-Is-Not-a-Pair-by-Britta-Teckentrup.pdf
    • http://cefasfese.4pu.com/2735737738738734/The-Au-Pair-Affair-by-Bonnie-Dee.pdf

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