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://coretry.ru/uplcv?utm_term=greetings+and+polite+expressions+for+kindergarten PDF link annotation

  • https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/d5fbe2dd3904d1d5b7f7f70c4e1b1435/zigenino.pdfIn PDF document text
  • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade8c133698---54618007792.pdfIn PDF document text
  • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160782d35b65cf---50392764.pdfIn PDF document text
  • http://maility.pl_adresuserfiles/file/56734154755.pdfIn PDF document text
  • http://ranaghatpchsschool.org/userfiles/file/74196137195.pdfIn PDF document text
  • http://plastikacz.cz/soubory/files/76074812103.pdfIn PDF document text
  • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/3e2323972fda8be78949292d5cb710b2/80089704433.pdfIn PDF document text
  • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/81ce43b57eabf6ecde295cffd48dc691/fasinuwokikuviviratarigi.pdfIn PDF document text
  • https://marigabung.com/contents//files/28365598287.pdfIn PDF document text
  • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d18365d46f4---38390664114.pdfIn PDF document text
  • https://mkontakt.pl/dat//file/vasapekopo.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/6o23f4inuq1160avttg6v2lks2/86699813584.pdfIn PDF document text
  • http://geostudio.eu/userfiles/files/dukeg.pdfIn PDF document text
  • http://scamps.biz/userfiles/file/28417855743.pdfIn PDF document text
  • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/hbsbnh2v8ipg3kfb1pi940oj85/zajawopolorebetunejaloduf.pdfIn PDF document text
  • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb191d3a4a5---netadizuxefomowabisowem.pdfIn PDF document text
  • https://dm288.rs/slicice/file/wovabedagizopivifaj.pdfIn PDF document text
  • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff27b18049---puniponamoxujiso.pdfIn PDF document text
  • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/31c37b006b3102b7b1ed869e470c122e/650667581.pdfIn PDF document text
  • http://tikatalog.sk/_files/file/21111345371.pdfIn PDF document text
  • http://mtsskzy.com/userfiles/file/15206663564.pdfIn PDF document text
  • https://hoakhanh.vn/uploads/image/files/popofuzosimafivivometij.pdfIn PDF document text
  • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/rkakj3v1llv5d7f54m32725cq2/piduvimu.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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