Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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 https://synerhu.ru/uplcv?utm_term=14+swg+to+mm PDF link annotation

  • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608905273f350---59997043257.pdfIn PDF document text
  • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/ddc294579785f035fe6ad53a320cc77e/45802921316.pdfIn PDF document text
  • http://centralgiving.com/media/userfiles/file/xomoxaxama.pdfIn PDF document text
  • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/02038bf10cf53d56e042466c4cd90748/ririgimos.pdfIn PDF document text
  • https://laser123.com/geektic/files/mererotozemo.pdfIn PDF document text
  • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160805d0945629---954332553.pdfIn PDF document text
  • https://octvads.site/js/ckfinder/userfiles/files/9384137069.pdfIn PDF document text
  • http://taiwan-casters.com/userfiles/file/79444673480.pdfIn PDF document text
  • http://weilandvloeren.nl/fckimages/88305197930.pdfIn PDF document text
  • http://epodhajska.eu/UserFiles/File/wuxunoluxe.pdfIn PDF document text
  • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/9ec87c5b27d166ae529b6137a773a24f/87273604817.pdfIn PDF document text
  • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612bba90700cd---metazaroniwetudigopa.pdfIn PDF document text
  • http://ciccioinpentola.com/userfiles/files/85036734351.pdfIn PDF document text
  • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1608592e2ea5c9---tagisek.pdfIn PDF document text
  • https://aulacvn.com/upload/fck/file/11648433289.pdfIn PDF document text
  • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d22c7cb56df---97548459390.pdfIn PDF document text
  • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086920ea8b8a---52589261685.pdfIn PDF document text
  • http://fence-alarm.com/userfiles/files/96173054206.pdfIn PDF document text
  • http://crabber81reunion.com/clients/b/b6/b60cf3d631ff247311937b5f15bedc89/File/25849726517.pdfIn PDF document text
  • http://bielwod.com/userfiles/file/sotelofovelozilop.pdfIn PDF document text
  • https://fotokeramika.bg/userfiles/file/xebinemolog.pdfIn PDF document text
  • http://miyozenemeryville.com/uploads/files/zalobasezajop.pdfIn PDF document text
  • http://nebovsem.ru/app/webroot/files/files/8325877439.pdfIn PDF document text
  • http://kasintorn.com/images/upload/files/4002598594.pdfIn PDF document text
  • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/91bac6129bcf5ad51bf07ef8953cc307/60369491706.pdfIn PDF document text
  • 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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