Malicious PDF — malware analysis report

Static analysis result for SHA-256 5af1b6205d7c48e6…

MALICIOUS

PDF

17.6 KB Created: 2020-03-18 21:07:58 +00:00 Authoring application: mPDF 5.7
MD5: c507d1939d95d2ff7d95271b5d3d606a SHA-1: 04abdf760796aa9f5dd82c55fe82719af9c1d700 SHA-256: 5af1b6205d7c48e69a2ae84d99acd24ceb38cf9c4bcf6c9862dcc972d4a23358
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this document as malicious with high confidence. While no scripts were explicitly extracted, the embedded links suggest an attempt to redirect the user to potentially harmful resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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://kitasdyu.myhome.cx/1871873872878874870/The-Art-of-Windows-8-1-by-Margaret-Calhoun.pdf
    • http://kitasdyu.myhome.cx/1871873872877872872/WIndows-8-1-Learning-Windows-8-1-for-Tablets-amp-Touch-Screens-Covers-Windows-RT-amp-Windows-8-1-by-Andy-Williams.pdf
    • http://kitasdyu.myhome.cx/1871873872877871878/Windows-8-1-Learn-Windows-8-1-in-Two-Hours-The-Smart-and-Efficient-Way-to-Learn-Windows-8-1-Windows-8-1-Windows-8-1-For-Beginners-by-Simon-Bedford.pdf
    • http://kitasdyu.myhome.cx/1871873872878872876/Exam-Ref-70-688-Supporting-Windows-8-1-MCSA-Supporting-Windows-8-1-by-Joli-Ballew.pdf
    • http://kitasdyu.myhome.cx/7877873878879872/Soul-Windows-Windows-to-the-Soul-Portraits-Soul-Windows-portraits-Book-1-by-Ali-Sabour.pdf
    • http://kitasdyu.myhome.cx/4876871878873874/Eva-of-the-Farm-by-Dia-Calhoun.pdf
    • http://kitasdyu.myhome.cx/5873878871877/Aria-of-the-Sea-by-Dia-Calhoun.pdf
    • http://kitasdyu.myhome.cx/1870876878876870871/Tonio-s-Cat-by-Mary-Calhoun.pdf
    • http://kitasdyu.myhome.cx/4873871875872874/White-Midnight-by-Dia-Calhoun.pdf
    • http://kitasdyu.myhome.cx/2870876878877877/On-the-Edge-Uncommon-0-5-by-Anne-Calhoun.pdf
    • http://kitasdyu.myhome.cx/3873870879872879/Blue-Calhoun-by-Reynolds-Price.pdf
    • http://kitasdyu.myhome.cx/4874873871877871/The-List-Irresistible-3-by-Anne-Calhoun.pdf
    • http://kitasdyu.myhome.cx/1874876872873/Depend-On-Katie-John-by-Mary-Calhoun.pdf
    • http://kitasdyu.myhome.cx/4875871874877870/Evening-Storm-Irresistible-4-by-Anne-Calhoun.pdf
    • http://kitasdyu.myhome.cx/4878875872876870/Gray-Ghost-Stoney-Calhoun-2-by-William-G-Tapply.pdf
    • http://kitasdyu.myhome.cx/6870870879879876/Create-a-Yoga-Practice-for-Kids-by-Yael-Calhoun.pdf
    • http://kitasdyu.myhome.cx/3870872876878877/The-Charm-School-Calhoun-Chronicles-1-by-Susan-Wiggs.pdf
    • http://kitasdyu.myhome.cx/4877879879877870/The-SEAL-s-Rebel-Librarian-Alpha-Ops-2-by-Anne-Calhoun.pdf
    • http://kitasdyu.myhome.cx/3879879873875877/The-Horsemaster-s-Daughter-Calhoun-Chronicles-2-by-Susan-Wiggs.pdf
    • http://kitasdyu.myhome.cx/1877876871870873/Witches-of-Bourbon-Street-Jade-Calhoun-2-by-Deanna-Chase.pdf

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