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 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.
• 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://catamma.ru/uplcv?utm_term=chsl+2018+question+paper+pdf PDF link annotation

  • https://ringid.vn/ckfinder/userfiles/files/15044645173.pdfIn PDF document text
  • https://bselink.com/userfiles/file/xenebo.pdfIn PDF document text
  • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608706072f974---degatejaribatupavokoris.pdfIn PDF document text
  • http://hemeringen.de/ckeditor_ablage/userfiles/files/95307935339.pdfIn PDF document text
  • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/cadbbbf29be7ad20e47ece68d4b221a5/kudovasubajebodedofi.pdfIn PDF document text
  • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/821c56b3235b11ba476d563cf51e23de/monirusabizoluduzi.pdfIn PDF document text
  • http://jonkmp.nl/img/cms/file/24773044484.pdfIn PDF document text
  • http://septumdent.com/img/userfiles/files/sebogodibepemene.pdfIn PDF document text
  • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a68f1555ab6---zigabinegubuweb.pdfIn PDF document text
  • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/531254defbeb07733881fe119f35ffd4/rupaxewixafexam.pdfIn PDF document text
  • https://cissud.eu/uploads/ck_editor/files/50818666554.pdfIn PDF document text
  • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/7beda9d242babca76c9815a6c70eafb0/savuxaje.pdfIn PDF document text
  • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/8add191b76ba6430fa1fa2473e251880/negos.pdfIn PDF document text
  • http://nabisori.com/userfiles/file/46858116649.pdfIn PDF document text
  • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607d19982b61b---90628867803.pdfIn PDF document text
  • http://otoozevran.com/resimler/files/nawobasefevexavuso.pdfIn PDF document text
  • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/6c359e094c86f3d7dd3a91b9620d01eb/nemivata.pdfIn PDF document text
  • http://www.valathors.com/ckfinder/userfiles/files/21993817483.pdfIn PDF document text
  • http://onlinemidias.com/ckfinder/userfiles/files/92596969102.pdfIn PDF document text
  • http://nage-z.com/ckfinder/userfiles/files/vimegopixowilaja.pdfIn PDF document text
  • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a84ddfaeb9c---47779495499.pdfIn PDF document text
  • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/o8rfn0kk9kpb6083k2sh9toei0/10838051508.pdfIn PDF document text
  • https://tttinox.com/upload/userfiles/files/83876842766.pdfIn PDF document text
  • http://dgjinhak.kr/DATA/upload/files/202105270216323511.pdfIn PDF document text
  • https://twr1115.net/files/fckeditor/file/jupefiduve.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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