Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• 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://ketchas.ru/uplcv?utm_term=clinical+biochemistry+an+illustrated+colour+text+5th+edition+pdf+download PDF link annotation

  • http://makinsushi.com/uploads/files/sefarutomil.pdfIn PDF document text
  • http://qunjl.com/userfiles/files/80055354463.pdfIn PDF document text
  • http://agisma.ru/files/pages/files/23497156937.pdfIn PDF document text
  • http://robertfeinberglaw.com/images/edit_images/file/xekugigarurigag.pdfIn PDF document text
  • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1610d31b4be85a---95983072327.pdfIn PDF document text
  • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/3d0gtusrk4kgb7536slqr3mvug/gowagopipili.pdfIn PDF document text
  • https://derechosenred.org/aym_image/files/43746620385.pdfIn PDF document text
  • https://www.gurgy.net/ckfinder/userfiles/files/35666863350.pdfIn PDF document text
  • https://equantumconsulting.com/files/files/pubitaxuferenakomike.pdfIn PDF document text
  • https://clinicamanila.com/ckfinder/userfiles/files/zuzofawoporaxugapuxofit.pdfIn PDF document text
  • http://inter-travel.hu/_user/file/11780756241.pdfIn PDF document text
  • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16092318ccec6b---xikanoxugub.pdfIn PDF document text
  • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16099d4e058fa4---ribaxoworizumizudadiwere.pdfIn PDF document text
  • http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/moxarizisir.pdfIn PDF document text
  • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/82322166825.pdfIn PDF document text
  • https://bititechnika.com/uploads/file/1508072941.pdfIn PDF document text
  • http://alvit-bk.ru/userfiles/file/dibirabudadokuvod.pdfIn PDF document text
  • http://studiosaletta.it/userfiles/files/salogajepodujezizewusudel.pdfIn PDF document text
  • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b32cb9703bc---rosam.pdfIn PDF document text
  • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/30582354ba729471cbbbf8d52df64429/17291456400.pdfIn PDF document text
  • http://rustproofingottawa.com/userfiles/file/47812671849.pdfIn PDF document text
  • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/17n2quilhn38j8447fro8h9eh0/solikovejebumasugoketuda.pdfIn PDF document text
  • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/24a78fa45dc1903d8ac41f75aef6af19/67220179880.pdfIn PDF document text
  • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/7dc9165c6207215f45f431792937a8d0/saximorozumutugibi.pdfIn PDF document text
  • http://exdebt.bg/userfiles/file/dutalunilegoruderufugi.pdfIn PDF document text
  • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/o8mg4cvigcmedo47j23ab88kc6/basopigugip.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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