Malicious PDF — malware analysis report

Heuristics 7

• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134e183dabd9---kenupiw.pdf In PDF document text

  • https://travelinnsuites.com/nbloom/fckuploads/file/5992838652.pdfIn PDF document text
  • http://veitali.com/upload/files/tumudojuzod.pdfIn PDF document text
  • https://chsins.tw/uploads/files/202109031102551994.pdfIn PDF document text
  • http://stefanourso.com/public/userfiles/file/xosezixo.pdfIn PDF document text
  • http://goldsunjsc.com/upload/files/70752802823.pdfIn PDF document text
  • http://karate-talence.com/newsite/userfiles/files/norofugedusolabof.pdfIn PDF document text
  • https://swagath.co/new/ckfinder/userfiles/files/ledeburovunatagawobi.pdfIn PDF document text
  • http://garageanything.com/js/upload/files/pavivom.pdfIn PDF document text
  • http://svadbavmoskve.com/content/xuploadimages/file/43922269562.pdfIn PDF document text
  • http://evolutionchonburi.com/userfiles/files/wepififeniwimakapifotolok.pdfIn PDF document text
  • http://rockhousemethod.com/ckfinder/userfiles/files/32459629152.pdfIn PDF document text
  • https://marjoyunlar.com/calisma2/files/uploads/migawivamux.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/jfe8u2lbkg71h7ngldesuvtth6/27450004092.pdfIn PDF document text
  • https://okazionche.com/files/36854752080.pdfIn PDF document text
  • http://ryukatsu.com/userData/board/file/18156315343.pdfIn PDF document text
  • http://gocoachfox.com/userfiles/file/jedudugeminowinax.pdfIn PDF document text
  • https://tatvan.in/userfiles/file/91523031377.pdfIn PDF document text
  • https://jmclimatizacionhvac.cl/images/subidas/file/88260646907.pdfIn PDF document text
  • http://hatowo.com/app/webroot/uploads/files/55128779182.pdfIn PDF document text
  • http://seattledesis.com/fckeditor/file/96159864026.pdfIn PDF document text
  • https://4cmedica.com/ficheiros_upload/file/zalitagakadet.pdfIn PDF document text
  • http://dinskayarealty.ru/media/file/23262163152.pdfIn PDF document text
  • http://eltdb.com/UserFiles/files/91617185985.pdfIn PDF document text
  • http://www.cottagegrad.ru/files/file/vigilupeli.pdfIn PDF document text
  • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613837f7dcc04---49802618852.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=download+call+of+duty+zombies+mod+apkPDF link annotation
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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