Malicious PDF — malware analysis report

Heuristics 9

• 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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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://nomylo.ru/uplcv?utm_term=pubg+movie+apk PDF link annotation

  • http://www.vljainandco.com/userfiles/files/50302144563.pdfIn PDF document text
  • http://kxxbs.com/uploadfiles/file/a/32229817848.pdfIn PDF document text
  • http://metroboxservices.com/upload/ckimage/files/vifimipupuvukepov.pdfIn PDF document text
  • https://laurallo.com/ckfinder/userfiles/files/59309412065.pdfIn PDF document text
  • https://prokoncept.hu/admin/blogfck/image/file/22468557435.pdfIn PDF document text
  • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1614254e765f4c---jalupopifuvebafewobepo.pdfIn PDF document text
  • https://greenlakepaint.com/ckfinder/userfiles/files/suzelakatijeduxa.pdfIn PDF document text
  • http://jandenzobv.com/image_uploads/file/30219471057.pdfIn PDF document text
  • https://drlanda.hu/user/file/nelofebonodakuzorifi.pdfIn PDF document text
  • https://milliondollardesiclub.com/upload_files/featured/files/lusawuluredevasiz.pdfIn PDF document text
  • http://fukaofoods.tw/uploads/files/202109091633567071.pdfIn PDF document text
  • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16145a41087c4c---54538713387.pdfIn PDF document text
  • http://nanobubblevietnam.com/uploads/userfiles/file/42608108751.pdfIn PDF document text
  • http://online-cycling.com/files/file/lukuzadipa.pdfIn PDF document text
  • https://olterus.net/contents/files/57935585980.pdfIn PDF document text
  • http://optimumnieruchomosci.pl/uploads/userfiles/files/18201906512.pdfIn PDF document text
  • https://unicorn.mn/js/ckfinder/userfiles/files/29351353096.pdfIn PDF document text
  • https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/vazet.pdfIn PDF document text
  • http://studiotecnicolamanna.com/userfiles/files/pokez.pdfIn PDF document text
  • http://agedwedfjtj.pretty-match.com/upload/files/59592940983.pdfIn PDF document text
  • http://seamacros.com/upload/file/33773236199.pdfIn PDF document text
  • http://xageunion.com/userfiles/file/1564471945.pdfIn PDF document text
  • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/90sdq3vs6603nm7jpulrkjcq81/mododalademeropomo.pdfIn PDF document text
  • http://ingatlantv.tv/userfiles/files/16955333328.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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