Malicious PDF — malware analysis report

Heuristics 7

• 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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=digestive+system+diagram+labeled+simple PDF link annotation

  • http://ipsaix.com/ckeditor/ckfinder/userfiles/files/mumegifev.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161541e4ae03b0---xuvivazoleviwiwirizomuwu.pdfIn PDF document text
  • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/hcfrr2b6p4plj5kd1nqfn8ok9a/kasijajikitigaxuzazovub.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/43571530305.pdfIn PDF document text
  • https://worldpigment.com/image/upload/File/ribigekajaxoxu.pdfIn PDF document text
  • http://yansyuan.com/UserFiles/images/files/49059635836.pdfIn PDF document text
  • http://bekkercoon.ru/ckfinder/userfiles/files/negofetegilupajug.pdfIn PDF document text
  • http://beerskiboot.de/img/upload/file/73105899928.pdfIn PDF document text
  • http://vallovin.it/userfiles/files/85921769318.pdfIn PDF document text
  • https://miet.hu/kepek/10949951717.pdfIn PDF document text
  • http://esipro.be/userfiles/file/33017357556.pdfIn PDF document text
  • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616f1a3fbaa0a---15832067858.pdfIn PDF document text
  • http://georgewongdesign.com/gwd/upload/files/84688443713.pdfIn PDF document text
  • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/161583d169fe3a---bogixigasuvima.pdfIn PDF document text
  • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/161560be055841---pumawo.pdfIn PDF document text
  • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/491f3d11bfee9bda58bc87aaa0afc6c7/43832433141.pdfIn PDF document text
  • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617c57873baba---25956594394.pdfIn PDF document text
  • http://gdgom.com/upload/file/2111011418093211715sod7gyj7ezd.pdfIn PDF document text
  • https://zibarajabi.com/cache/fck_files/file/35945239267.pdfIn PDF document text
  • https://bvphcn.bdata.vn/upload/files/65325159773.pdfIn PDF document text
  • https://greenbins.ca/ckfinder/userfiles/files/53229004519.pdfIn PDF document text
  • http://anipetkingdom.com/webroot/img/files/51119010237.pdfIn PDF document text
  • http://seychelles-resort.com/images/blog/file/migakebiga.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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