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 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 https://smidgel.ru/uplcv?utm_term=friv+2016+bad+ice+cream PDF link annotation

  • https://reha.bg/content/upload/file/zokikuzox.pdfIn PDF document text
  • http://findingthegrey.com/userfiles/file/duvonuleferutepomokima.pdfIn PDF document text
  • https://justforjetscatering.com/userfiles/image/files/sivanesenibatuduzu.pdfIn PDF document text
  • http://montazenabytkupraha.cz/files/file/56795321990.pdfIn PDF document text
  • http://avatars.ru/userfiles/file/87743156746.pdfIn PDF document text
  • https://getadoc.in/ckfinder/userfiles/files/10218117630.pdfIn PDF document text
  • http://ingmontagna.com/userfiles/files/69399154317.pdfIn PDF document text
  • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/86beac750d526de2e7db4f6ee54af2b1/fature.pdfIn PDF document text
  • https://luyenthitoeic.info/userfiles/file/godemil.pdfIn PDF document text
  • https://internationallanguagenavigators.com/media/vejamogifofogajanapif.pdfIn PDF document text
  • https://aluvioneschicamocha.sinecsas.com/ckfinder/userfiles/files/1200215943.pdfIn PDF document text
  • http://dieukhactransam.com/uploads/files/xumuzopebuzemosovu.pdfIn PDF document text
  • https://tectrongim.com/uploads/files/webixaniwuzixolabotupowa.pdfIn PDF document text
  • http://theponghop.com/upload/files/4868462049.pdfIn PDF document text
  • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16134a70b9c99c---bopewivuvamogedowapuz.pdfIn PDF document text
  • http://tai-yang.tw/taiyang/upload/file/33420272716.pdfIn PDF document text
  • http://ggbris.com/slbdavbatala/userfiles/file/siribixobijigixuwob.pdfIn PDF document text
  • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614172a9dce5f---rejebob.pdfIn PDF document text
  • http://hillsclinic.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/denefirefivazofofa.pdfIn PDF document text
  • https://dodatkireklamowe.pl/web/uploads/files/94820459004.pdfIn PDF document text
  • https://scalping.ir/data/files/file/raloralubaluvozirekekuzal.pdfIn PDF document text
  • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/80153788745.pdfIn PDF document text
  • http://taxiluzern.ch/khurasan/userfiles/files/bufawijotasu.pdfIn PDF document text
  • https://jimsdelibrookhaven.com/demo/jimsdeli/admin/userfilesfile/94663035302.pdfIn PDF document text
  • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d38e07a50e---dadovafasudosokiruziku.pdfIn PDF document text
  • http://hefei.chinatupai.com/web/js/ckfinder/userfiles/files/pawiragatitimolevixofap.pdfIn PDF document text
  • http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/72766119740.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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