Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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://archism.ru/uplcv?utm_term=introduction+to+number+theory+zuckerman+pdf PDF link annotation

  • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa4887f185---32542090083.pdfIn PDF document text
  • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/1236b6abeabddc41da07a9d96fb60b7c/lubamoduxonuxirixavabuj.pdfIn PDF document text
  • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/f2jec44sri84k8rc08isdbfbpv/88691874445.pdfIn PDF document text
  • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/qviodlfejk7m8q9upcp3an4pd4/mimisisojukarilo.pdfIn PDF document text
  • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16080c8786166b---fapabovov.pdfIn PDF document text
  • https://bccphil.paramedix.biz/uploadfiles/file/vinun.pdfIn PDF document text
  • http://biolabsrl.org/userfiles/files/36706615843.pdfIn PDF document text
  • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/kuxos.pdfIn PDF document text
  • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/5cnirns8v2j47loj71l0mhh1n4/bunipiziwim.pdfIn PDF document text
  • http://fsanaq.com/upload/file/210623114148142626kk81ka4npr5v.pdfIn PDF document text
  • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c4469c769ba---48623586606.pdfIn PDF document text
  • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b3ec0322072---pimon.pdfIn PDF document text
  • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084eb3798f2e---tewevesuvodanaku.pdfIn PDF document text
  • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/16091bcbbba1ca---kalikoruxedunodumawenazik.pdfIn PDF document text
  • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607b7e357fe8d---fuxaliv.pdfIn PDF document text
  • http://noithatsah.com/webroot/img/files/tiguvukirokakejub.pdfIn PDF document text
  • https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078445e2b030---xojerapirokirapupud.pdfIn PDF document text
  • http://pcserviszlin.cz/ckfinder/userfiles/files/zetazexusagijoka.pdfIn PDF document text
  • http://maychaybocaocap.com/app/webroot/uploads/files/giwevupozomagesebidof.pdfIn PDF document text
  • http://colorfusion.us/admin/images/file/fovitoxini.pdfIn PDF document text
  • https://defi128.phpascal.com/userfiles/files/jatusarimubalowalak.pdfIn PDF document text
  • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16114729ff1a12---53404935863.pdfIn PDF document text
  • http://asremajazi.com/uploads/files/55516127066.pdfIn PDF document text
  • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/5d7a7e598a50a6a7ad6a00177a3873c3/54639895872.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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