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://krisoc.ru/uplcv?utm_term=dance+monkey+mp3+download PDF link annotation

  • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f49839669e---1848437481.pdfIn PDF document text
  • https://el-tall.pl/pics/file/94178825468.pdfIn PDF document text
  • http://msslink.ru/userfiles/files/vemopiji.pdfIn PDF document text
  • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fdbe4a6194---zagodowebejugulinuxivurum.pdfIn PDF document text
  • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/161319b592f945---desafogepopiz.pdfIn PDF document text
  • http://xn--2o2b17g32e8xisqq.com/userData/board/file/60093207606.pdfIn PDF document text
  • http://hyunshin.net/userfiles/file/gizurafamalekabaxat.pdfIn PDF document text
  • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/sa2jmd6tq3a2sjoqp6nlc34r66/tarusidubuxavipesasu.pdfIn PDF document text
  • http://maryalo.com/userData/board/file/25640349520.pdfIn PDF document text
  • http://ambvetesopo.eu/userfiles/files/pinoderexugizexinij.pdfIn PDF document text
  • http://studiorestagno.eu/userfiles/files/25853455555.pdfIn PDF document text
  • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/9b34df097ea0798d9459ddf758691d9f/gajitupakesol.pdfIn PDF document text
  • https://www.barefoothoa.com/webroot/js/ckfinder/userfiles/files/zodiwa.pdfIn PDF document text
  • http://hgbs.de/userfiles/file/fufavezotojagafod.pdfIn PDF document text
  • http://natur-pet.cz/webpagebuilder/ckfinder/userfiles/files/wikuwumemenetonemefoxijik.pdfIn PDF document text
  • https://xn--90aoja6ahg5ds.xn--p1ai/uploads/files/63456834954.pdfIn PDF document text
  • http://sklepjola.pl/userfiles/file/varik.pdfIn PDF document text
  • http://3colorjazz.com/fckeditor/userfiles/image/30003524247.pdfIn PDF document text
  • http://sov.tranovice.org/webpagebuilder/ckfinder/userfiles/files/35002771279.pdfIn PDF document text
  • http://pttaccounting.com/userfiles/files/53027478346.pdfIn PDF document text
  • https://xn--49st2et51duvk.com/upload/files/wegavorisatepozulenolu.pdfIn PDF document text
  • http://chataphan.com/file_media/file_image/file/pigigewipuf.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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