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.
• 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://krisoc.ru/uplcv?utm_term=the+element+of+style+pdf PDF link annotation

  • http://nessium.fr/userfiles/file/mipatajelezukoramibop.pdfIn PDF document text
  • http://bjjiffy.com/upload/89497487385.pdfIn PDF document text
  • https://quangcaowebsite.vn/uploads/files/kaxazudixakogep.pdfIn PDF document text
  • http://friend5190.xyz/js/ckfinder/userfiles/files/7610336926.pdfIn PDF document text
  • http://lavalnerina.it/userfiles/file/guborufasubi.pdfIn PDF document text
  • https://papiratisk.cz/soubory/kegewamagiwo.pdfIn PDF document text
  • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607e40fd19114---kamebamopujajisasez.pdfIn PDF document text
  • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f09bc76f74---vovupiramasikomujalo.pdfIn PDF document text
  • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fae0e38540---3875164002.pdfIn PDF document text
  • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b0142570f27---pigusuwu.pdfIn PDF document text
  • http://seamacros.com/upload/file/37482444618.pdfIn PDF document text
  • http://xn----otbbfbbknchz.xn--p1ai/sadm_files/semubagulaxex.pdfIn PDF document text
  • https://nocnepal.org.np/ckfinder/userfiles/files/64233862858.pdfIn PDF document text
  • http://www.vandiestbrandstoffen.be/uploads/files/17405139967.pdfIn PDF document text
  • http://washchienluoc.com/upload/file/68356487448.pdfIn PDF document text
  • http://wangyiphk.com/userfiles/nigixo.pdfIn PDF document text
  • https://hutechsolar.com/upload/user_upload/files/13864050201.pdfIn PDF document text
  • http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/39651209489.pdfIn PDF document text
  • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609f41c331ec5---20894490728.pdfIn PDF document text
  • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2b53d1469c---19546522991.pdfIn PDF document text
  • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/d831c689a8f1b65cab1468ce1bbdd0bd/71812383901.pdfIn PDF document text
  • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/0adb4a6729a4c0258a4c23220494f760/makikufuvofukid.pdfIn PDF document text
  • http://lideparts.com/userfiles/file/1626866480.pdfIn PDF document text
  • http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/xibupovubazezeginome.pdfIn PDF document text
  • http://111-orte.de/testarea/cwsCMSlight/media/files/33520796765.pdfIn PDF document text
  • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160c13a7006ef2---fukuvadajatowesamerake.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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