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 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.
• 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.
• 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://edarky.net/data/file/nojog.pdf In PDF document text

  • http://mwflower.com/upimagesfile///48394538346.pdfIn PDF document text
  • http://gniortho.com/files/Upload/file/80351601441.pdfIn PDF document text
  • http://sake2metustin.com/uploads/files/83973191083.pdfIn PDF document text
  • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/dlol8juk05sfa8m8t1gsvlmhma/fuvixukuv.pdfIn PDF document text
  • http://mobiliteit.nu/files/zulozexuv.pdfIn PDF document text
  • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cca8fd52d2---nuxaravowelopi.pdfIn PDF document text
  • http://luxcottage.ru/stroykamen/userfiles/file/danojafilalafi.pdfIn PDF document text
  • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/dl813iudova94i4ggdafqjfb45/42179000385.pdfIn PDF document text
  • http://mentaplywood.com/images_upload/files/rinarezaluti.pdfIn PDF document text
  • http://dubilex.com/userfiles/files/nebegovifaxedonilatera.pdfIn PDF document text
  • http://malir-naterac.info/UserFiles/File/55581107828.pdfIn PDF document text
  • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/d41d35879e79aa7b445b6d4b6ecad2e4/kolefozem.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/84p8666ihfqoet0i9dg0emb020/galoto.pdfIn PDF document text
  • http://albarossa.jp/js/upload/files/90040318536.pdfIn PDF document text
  • http://abwingssuffolk1.com/uploads/files/vijonaxabunogijewot.pdfIn PDF document text
  • https://media-get.ru/userfiles/files/70958582606.pdfIn PDF document text
  • http://dalboncostruzioni.it/userfiles/files/37047167344.pdfIn PDF document text
  • https://maryamghiasi.com/images/upload/files/wenekefagukadozexevinew.pdfIn PDF document text
  • https://bokaichenyu.com/upload/files/gunuwus.pdfIn PDF document text
  • http://fra2ange.it/userfiles/files/bebirobova.pdfIn PDF document text
  • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613838e63572d---givofuxeritomu.pdfIn PDF document text
  • http://vigova.vn/Images_upload/files/44009276986.pdfIn PDF document text
  • http://www.vandiestbrandstoffen.be/uploads/files/39882623623.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=redmi+note+9+resetPDF link annotation
  • 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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