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://queure.ru/uplcv?utm_term=log+functions+worksheet PDF link annotation

  • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/51b968c7a5328d7334470b5ddf14ea20/1349264245.pdfIn PDF document text
  • https://www.ijmsir.com/ckfinder/userfiles/files/17064140712.pdfIn PDF document text
  • https://mcdpiti.com/userfiles/files/modowapanobejude.pdfIn PDF document text
  • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/j9lqp7g3saafkdpbc8mhek6v66/rukowaxosanasinaniwovefer.pdfIn PDF document text
  • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1607f309084a7d---88559206837.pdfIn PDF document text
  • https://riminabda.sk/userfiles/file/34557369689.pdfIn PDF document text
  • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/1ea702ace0ca068ea807a02135f16454/wezebonoxe.pdfIn PDF document text
  • http://glearningsolutions.com/userfiles/files/589746075.pdfIn PDF document text
  • http://119hero.kr/userData/board/file/75431063535.pdfIn PDF document text
  • http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/31775475481.pdfIn PDF document text
  • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a07c31720---97737371530.pdfIn PDF document text
  • https://dla-pracownika.pl/pliki_user/File/tilegiw.pdfIn PDF document text
  • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/d0be0652c1f4fadcf5aef48d9dbf25b3/74284524748.pdfIn PDF document text
  • http://industra.sk/userfiles/file/84599706543.pdfIn PDF document text
  • http://gradn.ru/uploades/fckeditorfile/sorojufob.pdfIn PDF document text
  • http://tranindo.com/Uploads/userfiles/files/gopimuzo.pdfIn PDF document text
  • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/befowofujadakutekoroz.pdfIn PDF document text
  • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/094779539a3862e6c077bd699af7cef4/6870028883.pdfIn PDF document text
  • http://alnoorcity.com/userfiles/file/pubezorabawimotaxupifo.pdfIn PDF document text
  • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/e8919e2fbb7a547ac0b7a02577018c19/58007863463.pdfIn PDF document text
  • http://mobilephleb.com/clients/2/2d/2d2188d13063160162e6e2bbcdac547d/File/33490588891.pdfIn PDF document text
  • https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/94093717438.pdfIn PDF document text
  • http://inter-travel.hu/_user/file/87502297884.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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