Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a6b813d6487009…

MALICIOUS

PDF

16.1 KB Created: 2019-04-16 21:10:41 +01:00 Authoring application: mPDF 5.7
MD5: 6c8c46e0272a34ec92b79769a414e289 SHA-1: c44c7e652e7e5b9c0934142f93a942fec18bc007 SHA-256: 14a6b813d648700998fc2bc6949e203b0d51febe45add3af322d86db73d116fd
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 distribute further malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to potentially harmful content, aligning with a spearphishing attachment tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/1731735732738733732/Verzaubert-von-deinen-K-ssen-JULIA-1959-by-Tina-Duncan.pdf
    • http://cefasfese.4pu.com/1731735732739731738/Julia-Extra-Band-322---Titel-4-Verzaubert-vom-Fest-der-Liebe-by-Jackie-Braun.pdf
    • http://cefasfese.4pu.com/1730734735733739734/Einleitung-in-Die-Mengenlehre-Eine-Gemeinverst-ndliche-Einf-hrung-in-Das-Reich-Der-Unendlichen-Gr-ssen-by-Abraham-Adolf-Fraenkel.pdf
    • http://cefasfese.4pu.com/6732739734739733/Life-Into-Art-Isadora-Duncan-and-Her-World-by-Doree-Duncan.pdf
    • http://cefasfese.4pu.com/3730736739732739/-I-Tina-What-s-Love-Got-To-Do-With-It-by-Tina-Turner.pdf
    • http://cefasfese.4pu.com/7739731733734732/Tina-s-Story-Urban-Fiction-Gone-Viral-by-Tina-Story.pdf
    • http://cefasfese.4pu.com/1731735732736739735/Verzaubert-by-Nancy-Madore.pdf
    • http://cefasfese.4pu.com/6730730731730/Von-der-Nacht-verzaubert-Die-for-Me-1-by-Amy-Plum.pdf
    • http://cefasfese.4pu.com/3739730731733733/I-Tina-by-Tina-Turner.pdf
    • http://cefasfese.4pu.com/1731735732737730734/Verzaubert-von-deinem-Blick-by-Tally-Bandet.pdf
    • http://cefasfese.4pu.com/4731738731733/The-Complete-Peanuts-Vol-5-1959-1960-by-Charles-M-Schulz.pdf
    • http://cefasfese.4pu.com/4739735732730739/Julia-the-Secret-Keeper-Julia-s-Secrets-1-by-Franky-A-Brown.pdf
    • http://cefasfese.4pu.com/5739739736734737/Lebe-deinen-Traum-by-Lucy-Sky.pdf
    • http://cefasfese.4pu.com/1731735732738730731/Samtpfote---ganz-verzaubert-Ein-Katzenroman-by-Martina-Magyari.pdf
    • http://cefasfese.4pu.com/1731735732738732734/Zauberhaft-Verzaubert---BeWitchED-Band-13-by-Serena-S-Murray.pdf
    • http://cefasfese.4pu.com/1731735732738733738/Verzaubert-Eine-Herzensfabel-in-Versen-by-Maria-Janitschek.pdf
    • http://cefasfese.4pu.com/1731735732739732734/Pl-tzlich-verzaubert-The-Unicorns-of-Blossom-Wood-1-by-Catherine-Coe.pdf
    • http://cefasfese.4pu.com/1731735732738737732/Zum-zweiten-Mal-von-dir-verzaubert-BIANCA-1602-by-Kristin-Hardy.pdf
    • http://cefasfese.4pu.com/3730737735736735/In-Julia-s-Kitchen-with-Master-Chefs-by-Julia-Child.pdf
    • http://cefasfese.4pu.com/6735735732732/Airport-1968-The-Final-Diagnosis-1959-by-Arthur-Hailey.pdf

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