Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef15a4c44963204…

MALICIOUS

PDF

48.0 KB Created: 2021-09-21 21:19:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: e5cb075f18456c6675590161fa4fa297 SHA-1: 49a0ce86b8e2009f7a70433ac35a1c246a9c3440 SHA-256: cef15a4c4496320485feb5a68bb43039c510c5f35cb9989f3885f080e6b20ffd
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to suspicious domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8987

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://cgemfoco.com.br/ckfinder/userfiles/files/warevejezepapuxusoxeza.pdf In PDF document text
    • http://nature-revive.org/files/file/xofuxatufeporivezo.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/losudoz.pdfIn PDF document text
    • https://topclassgreenery.nl/images/file/50749743793.pdfIn PDF document text
    • https://beta.nhatthiengroup.com/files/uploaded/files/lenejixim.pdfIn PDF document text
    • https://activepymes.com/pub/file/37065734390.pdfIn PDF document text
    • http://furnitura-syndicat.ru/ckeditor/ckfinder/core/connector/php/uploads/files/xularolupavejenaz.pdfIn PDF document text
    • http://www.letnifestiwal.pl/ckfinder/userfiles/files/tujabokikonifuzagumaro.pdfIn PDF document text
    • https://hiroyoung.com/data/files/12679076198.pdfIn PDF document text
    • http://shop-cartuning.pl/userfiles/file/25119290434.pdfIn PDF document text
    • http://sfipl.in/userfiles/file/pojivejofovuju.pdfIn PDF document text
    • http://belovosushi.ru/files/sabasuletej.pdfIn PDF document text
    • http://viajaconsciente.com/imagenes/userfiles/file/70033774813.pdfIn PDF document text
    • https://barcelonacentromedico.es/files/galeria/files/11466677087.pdfIn PDF document text
    • http://kientrucnhacuagio.com/upload/files/1986502316.pdfIn PDF document text
    • http://st03.it/userfiles/files/94517095121.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/161468b6bbd5d7---87067620165.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/45541305902.pdfIn PDF document text
    • http://santehnika34.ru/images/file/16427040599.pdfIn PDF document text
    • http://ooexperience.be/assets/Image/files/18892110715.pdfIn PDF document text
    • https://solucionaesp.com/ckfinder/userfiles/files/66181118537.pdfIn PDF document text
    • http://thegioixedap.net/upload/files/bezujejomenaw.pdfIn PDF document text
    • http://vinhomeshaiphong.net/app/webroot/img/files/laxeve.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=logo+maker+offline+apkPDF link annotation