Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfeafcff558eede4…

MALICIOUS

PDF

14.7 KB Created: 2019-09-06 08:28:14 +01:00 Authoring application: mPDF 5.7 First seen: 2020-12-25
MD5: 548e880d13d7de28471900877038f683 SHA-1: e8579fa82505e77c5f0f611854ec0cc05192425d SHA-256: cfeafcff558eede4410fecbdd3ed08ed579dbe7f1ae2ebb101c1e72a590b244c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF 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 PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/9739736731734736/Love-Beyond-Limits-A-Southern-Love-Story-Among-the-Fair-Magnolias-by-Elizabeth-Musser.pdf In PDF document text
    • http://cefasfese.4pu.com/1735732737733730/Clash-Of-Empires-by-Sam-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730735737730732730/How-Lon-Got-Screwed-by-a-Terrorist-by-E-K-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/3738733734736736/Happy-Family-by-Tracy-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/1733731738739733/Wolf-s-Glory-After-the-Crash-2-by-Maddy-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/1737739732739738/Wolf-Tracker-After-the-Crash-3-by-Maddy-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/4734734737738736/Sherry-s-Wolf-After-the-Crash-3-5-by-Maddy-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/2739733738737731/Wolf-s-Glory-After-the-Crash-2-by-Maddy-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/1738734735735733/Wolf-s-Glory-After-the-Crash-2-by-Maddy-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/1735732737735732/Conflict-of-Empires-Eskkar-Saga-3-by-Sam-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/1732733733736737/Sleeping-With-the-Wolf-After-the-Crash-1-by-Maddy-Barone.pdfIn PDF document text
    • http://cefasfese.4pu.com/3733733739736732/Bastard-s-Baby-Barone-Crime-Family-2-by-B-B-Hamel.pdfIn PDF document text
    • http://cefasfese.4pu.com/7738733736739734/Il-barone-rampante-Ediz-speciale-by-Italo-Calvino.pdfIn PDF document text
    • http://cefasfese.4pu.com/1731737732738737737/Barone-Bauern-Und-Bolschewiken-In-Estland-by-Carl-Axel-Mothander.pdfIn PDF document text
    • http://cefasfese.4pu.com/2738735739733/My-Name-Is-Thank-You-by-Kaizen-Elizabeth-Love.pdfIn PDF document text
    • http://cefasfese.4pu.com/5738739736732732/Love-Just-Happens-by-Elizabeth-Scott.pdfIn PDF document text
    • http://cefasfese.4pu.com/2734739736735737/Eat-Pray-Love-by-Elizabeth-Gilbert.pdfIn PDF document text
    • http://cefasfese.4pu.com/3734738733735734/True-Love-Way-by-Mary-Elizabeth.pdfIn PDF document text
    • http://cefasfese.4pu.com/3732732733739/Eat-Pray-Love-by-Elizabeth-Gilbert.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730739736734730/The-Face-of-Love-by-Elizabeth-Van-Steenwyk.pdfIn PDF document text

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