Malicious PDF — malware analysis report

Static analysis result for SHA-256 a61011bc4d01c198…

MALICIOUS

PDF

21.7 KB Created: 2019-05-01 17:05:26 +01:00 Authoring application: mPDF 5.7
MD5: ae312f0e3007cefbc1ff103b70c14bf5 SHA-1: 0f3cb5cd6f08d05ddda07fdc7f1a31295dc1292e SHA-256: a61011bc4d01c198eeb0a7fc84157c31c257e02c62e5b57f2f8e125d9004a09f
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links pointing to external PDF documents hosted on a dynamic DNS domain. This technique is often used to distribute malicious content or to engage in SEO poisoning to drive traffic to malicious sites. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm.

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://cmeinasaoo.duckdns.org/5b20b25b21b28b21/Sink-or-Swim-Exploring-Schools-of-Fish-A-Branches-Book-The-Magic-School-Bus-Rides-Again-1-by-Judy-Katschke.pdf
    • http://cmeinasaoo.duckdns.org/5b29b22b27b25/Sink-or-Swim-Art-amp-Coll-3-by-Kate-Cann.pdf
    • http://cmeinasaoo.duckdns.org/1b22b22b24b21b24/Dare-to-Scare-Two-of-a-Kind-Diaries-31-by-Judy-Katschke.pdf
    • http://cmeinasaoo.duckdns.org/8b26b22b20b25b27/Sink-or-Swim-From-the-Files-of-Madison-Flinn-13-by-Laura-Dower.pdf
    • http://cmeinasaoo.duckdns.org/1b22b22b24b22b21/Camp-Rock-n-Roll-Two-of-a-Kind-Diaries-35-by-Judy-Katschke.pdf
    • http://cmeinasaoo.duckdns.org/5b24b24b22b21b24/Children-Their-Schools-and-What-They-Learn-on-Beginning-Primary-School-English-and-French-Educational-Legacies-in-Cameroon-Schools-by-Genevoix-Nana.pdf
    • http://cmeinasaoo.duckdns.org/1b21b27b24b21b27b27/Strengthen-School-Based-Management-by-Chartering-All-Schools-A-Three-Year-Policy-Based-Strategy-for-Creating-Autonomous-Public-Schools-Within-Restru-by-Ray-Budde.pdf
    • http://cmeinasaoo.duckdns.org/8b24b27b20b24b21/The-Magic-School-Bus-Blows-Its-Top-A-Book-about-Volcanoes-by-Joanna-Cole.pdf
    • http://cmeinasaoo.duckdns.org/3b21b24b29b26b22/The-Magic-School-Bus-in-the-Arctic-A-Book-About-Heat-A-Book-About-Heat-by-Anne-Schreiber.pdf
    • http://cmeinasaoo.duckdns.org/5b28b23b23b20/The-Devil-Rides-Out-Black-Magic-1-by-Dennis-Wheatley.pdf
    • http://cmeinasaoo.duckdns.org/1b26b27b27b21b27/Gould-s-Book-of-Fish-A-Novel-in-Twelve-Fish-by-Richard-Flanagan.pdf
    • http://cmeinasaoo.duckdns.org/7b28b27b25b20b24/The-Art-Show-Attacks-A-Branches-Book-Eerie-Elementary-9-by-Jack-Chabert.pdf
    • http://cmeinasaoo.duckdns.org/7b28b27b24b20b29/The-Hall-Monitors-Are-Fired-A-Branches-Book-Eerie-Elementary-8-by-Jack-Chabert.pdf
    • http://cmeinasaoo.duckdns.org/6b26b22b26b25b20/Fish-School-by-Walt-Disney-Company.pdf
    • http://cmeinasaoo.duckdns.org/1b27b24b21b26b26/Students-Can-Help-Keep-Schools-Safe-A-Student-Teacher-Guide-to-School-Safety-and-Violence-Prevention-by-Julie-K-Federico.pdf
    • http://cmeinasaoo.duckdns.org/1b21b26b29b27b27b26/Fish---Noch-mehr-Fish---F-r-immer-Fish-Dreimal-ungew-hnliche-Motivation-in-einem-Band-by-Stephen-C-Lundin.pdf
    • http://cmeinasaoo.duckdns.org/1b21b28b21b28b25b27/Magic-Fish-by-Freya-Littledale.pdf
    • http://cmeinasaoo.duckdns.org/7b27b28b27b29b25/High-Schools-in-Shreveport-Louisiana-Captain-Shreve-High-School-by-Books-LLC.pdf
    • http://cmeinasaoo.duckdns.org/2b23b20b28b20b23/Girl-Rides-the-Wind-An-Emily-Kane-Adventure-Book-6-by-Jacques-Antoine.pdf
    • http://cmeinasaoo.duckdns.org/4b27b22b26b23b22/Red-Fish-Dead-Fish-Fish-Out-of-Water-2-by-Amy-Lane.pdf
    • http://cmeinasaoo.duckdns.org/5b24b24b22b21b24/Children-Their-Schools-and-What-They-Learn-on-Beginnin

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