Malicious PDF — malware analysis report

Static analysis result for SHA-256 57a1dc8312819515…

MALICIOUS

PDF

21.2 KB Created: 2019-06-04 10:54:30 +01:00 Authoring application: mPDF 5.7
MD5: 0754714c2a363c7a750eee4a145a2754 SHA-1: a13d20419e0832299a736c2afdf30df92b843276 SHA-256: 57a1dc831281951570dca468390c0594dd3f36c0e3ad6604044552289115545f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 strongly indicated maliciousness. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/3735739731730/The-New-Drawing-on-the-Right-Side-of-the-Brain-by-Betty-Edwards.pdf
    • http://cefasfese.4pu.com/1731732737732738733/Carta-canta---Zitti-tutti---In-fondo-a-destra-by-Raffaello-Baldini.pdf
    • http://cefasfese.4pu.com/8733735735733736/Il-mondo-in-sei-canzoni-Come-il-cervello-musicale-ha-creato-la-natura-umana-by-Daniel-J-Levitin.pdf
    • http://cefasfese.4pu.com/5737734735734735/Nuovo-Vocabolario-della-Lingua-Sarda---italiano-sardo-by-Massimo-Pittau.pdf
    • http://cefasfese.4pu.com/7731733735730738/Piante-grasse-senza-problemi-Il-nuovo-giardino-by-Alberto-Massa-Saluzzo.pdf
    • http://cefasfese.4pu.com/1730735732733736737/Betty-and-the-Beast-Betty-and-Veronica-265-by-Dan-Parent.pdf
    • http://cefasfese.4pu.com/3730738735735739/Betty-Crocker-Easy-Everyday-Vegetarian-Meatless-Main-Dishes-You-ll-Love-by-Betty-Crocker.pdf
    • http://cefasfese.4pu.com/1730731736734736731/el-camino-que-no-iba-a-ninguna-parte-by-Gianni-Rodari.pdf
    • http://cefasfese.4pu.com/5738739738733739/O-Medo-do-Homem-S-bio---Parte-I-by-Patrick-Rothfuss.pdf
    • http://cefasfese.4pu.com/1731731734734730733/The-Walking-Dead-Vol-20-Guerra-totale-Parte-1-by-Robert-Kirkman.pdf
    • http://cefasfese.4pu.com/8733730734737732/Tratado-dos-P-rias-Pr-ncipe-Ca-ador-Parte-2-by-Isabela-Allmeida.pdf
    • http://cefasfese.4pu.com/8732739736737734/Tempesta-di-Spade---Parte-seconda-A-Song-of-Ice-and-Fire-3-by-George-R-R-Martin.pdf
    • http://cefasfese.4pu.com/3730737738735732/Betty-Crocker-s-Best-Christmas-Cookbook-by-Betty-Crocker.pdf
    • http://cefasfese.4pu.com/8733735739733737/A-Quarta-Parte-do-Mundo-A-Corrida-aos-Confins-da-Terra-e-a-pica-Hist-ria-do-Mapa-Que-Deu-Nome-Am-rica-by-Toby-Lester.pdf
    • http://cefasfese.4pu.com/4731732733736730/Betty-amp-Veronica-2016--1-Betty-amp-Veronica-2016-2017-by-Adam-Hughes.pdf
    • http://cefasfese.4pu.com/4735730736730733/Jonathan-Edwards-Knowing-Christ-by-Jonathan-Edwards.pdf
    • http://cefasfese.4pu.com/1731739735734734732/Greyson-Chance-Me-amp-You-Posy-Edwards-by-Posy-Edwards.pdf
    • http://cefasfese.4pu.com/7731738730739738/Los-Vivicanti-de-Sangre---Parte-1-The-Blood-Vivicanti---Part-1-by-Becket.pdf
    • http://cefasfese.4pu.com/5738734734730731/A-Serva-do-Imp-rio-Saga-do-Imp-rio-2---parte-1-2-by-Raymond-E-Feist.pdf
    • http://cefasfese.4pu.com/9733739731731730/The-Epistles-and-Gospelles-with-a-Brief-Postil-Vpon-the-Same-from-After-Easter-Tyll-Aduent-Which-Is-the-Somer-Parte-Set-Forth-for-the-Singuler-Co-m-moditie-of-All-Good-Christen-Men-and-Namely-of-Prestes-and-Curates-1547-by-Richard-Taverner.pdf
    • http://cefasfese.4pu.com/1730735732733736737/Betty-and-the-Beast-Be