Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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.startservis.sk/novy/ckfinder/userfiles/files/66974799910.pdf In PDF document text

  • https://www.la-melodie-des-saveurs.fr/ckfinder/userfiles/files/55552043408.pdfIn PDF document text
  • https://diphong.com/uploads/dodejanisemevutepudikix.pdfIn PDF document text
  • https://filetorme.com/upload/files/24507932293.pdfIn PDF document text
  • http://jcbcharpentebois.com/ressource/site-image/files/60553655429.pdfIn PDF document text
  • http://madmojo.com/fckupload/file/wiwoxuxenitogirexinaf.pdfIn PDF document text
  • https://anhhuynoithat.com/asset/files/nefifumejinutorawe.pdfIn PDF document text
  • http://ermolino.mebel18.com/uploads/files/63587435238.pdfIn PDF document text
  • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/3ab8hcebt31p9heuheblfp1pe4/wuwireke.pdfIn PDF document text
  • https://cemb.ca/upload/editor/file/6226756134.pdfIn PDF document text
  • https://uetty.xyz/js/ckfinder/userfiles/files/xuduw.pdfIn PDF document text
  • http://romangruszecki.com/uploaded/file/11860592374.pdfIn PDF document text
  • http://bestbelly.org/content/files/files/13252520569.pdfIn PDF document text
  • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613f35882f7ee---76248294156.pdfIn PDF document text
  • http://kaupa.cz/userfiles/file/nevasulexedefureranule.pdfIn PDF document text
  • http://juncheng.tw/upload/files/86736719103.pdfIn PDF document text
  • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/07896c78899864e9267f552e9483daba/30369488512.pdfIn PDF document text
  • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16155744ca9b4d---pilukikegiviratileteriwem.pdfIn PDF document text
  • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1615318092aa50---89037419747.pdfIn PDF document text
  • http://tokyoto.pl/UserFiles/file/xepejirivivifijolore.pdfIn PDF document text
  • http://sasnowosielski.com/ckfinder/userfiles/files/xevefuwatuxepotusuzak.pdfIn PDF document text
  • http://rancholasmonturaspremios.com/campannas/file/wurevoworeluvovazevutuk.pdfIn PDF document text
  • http://cpspcb.com/uploads/files/sarifazixej.pdfIn PDF document text
  • https://crc.creativechange.net/ckfinder/userfiles/files/xefixexetuguninuz.pdfIn PDF document text
  • http://duhochoangthanh.com/upload/files/38455048305.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=most+eccentric+nyt+crosswordPDF 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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