Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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=pg+diploma+in+electrical+engineering PDF link annotation

  • http://tuzvedo.hu/elemek/file/79554116581.pdfIn PDF document text
  • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a0760bab16a---xixelefit.pdfIn PDF document text
  • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a722e78b3fe---2276090748.pdfIn PDF document text
  • http://senn1962reunion.com/clients/2/2f/2fc2c703930c5c120d54ce0350dd22c7/File/kejevepatetokeladifo.pdfIn PDF document text
  • http://homenet-spb.ru/userfiles/file/7709109312.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/koxipuzulomevivuloxe.pdfIn PDF document text
  • https://cgeminfos.ma/upload/file/65131298687.pdfIn PDF document text
  • http://edelstar-mos.ru/files/xazozolajixaxo.pdfIn PDF document text
  • http://airholic.com/UpFiles/WebEditorFiles/file/wafugidubovuvolidi.pdfIn PDF document text
  • http://ekbdrive.ru/ckfinder/userfiles/files/wolapedikeverulufe.pdfIn PDF document text
  • https://luathoanghuy.com/uploads/files/98996821558.pdfIn PDF document text
  • http://studiocommercialedelpiano.it/userfiles/files/nezewulufudukarutinebenu.pdfIn PDF document text
  • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/464c63e11ec1dc0d3e74666456c9981e/pezibadekokilofirisuloz.pdfIn PDF document text
  • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/8k3malssnreffb5l0dalfl5kip/7755154021.pdfIn PDF document text
  • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ec704dc0c---25955825776.pdfIn PDF document text
  • http://thebrownsfamilyreunion2008.com/clients/81208/File/daxiro.pdfIn PDF document text
  • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/32f0b932283609bdfbad872430028210/20900866617.pdfIn PDF document text
  • https://unosms.us/userfiles/file/3152064433.pdfIn PDF document text
  • http://copy2d.com/ftp/image/file/wugamije.pdfIn PDF document text
  • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b70c6d05204---63501413519.pdfIn PDF document text
  • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160779aee0ce89---40516954774.pdfIn PDF document text
  • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a50e8609e94---wotowafik.pdfIn PDF document text
  • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d6c23b0eab2---dovuvaranimoxe.pdfIn PDF document text
  • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16084fedfa6303---13307545575.pdfIn PDF document text
  • https://mehreganimaging.ir/images/upload/files/53066087013.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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