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://ketchas.ru/uplcv?utm_term=krishna+series+on+differential+calculus+pdf+free+download PDF link annotation

  • http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/25706409608.pdfIn PDF document text
  • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/022eca0099027c3aca02eecf8a75bbea/48264657921.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/orqa70sguhc6ld5tmbt5ur1oi1/7173296260.pdfIn PDF document text
  • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f3972cfb9---88899036059.pdfIn PDF document text
  • https://gregor-biffiger.ch/userfiles/file/33337759696.pdfIn PDF document text
  • http://kawoka.com/userfiles/file/kosesesejusi.pdfIn PDF document text
  • http://sahrugs.com/userfiles/file/kapawipe.pdfIn PDF document text
  • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/7c1021b1ad4fce1b640681ce0d1cc6d0/dojonuzimovupe.pdfIn PDF document text
  • https://bwawarszawa.pl/upload/file/motomujulimezoduwigawexon.pdfIn PDF document text
  • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/6b234888c350ae7e4716d3d7b5d2af46/18827956739.pdfIn PDF document text
  • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/db82a4f59a001eb433524da262a15a8f/92816406789.pdfIn PDF document text
  • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/55ed05ab2429467a82148269c0320e6b/pifirupimakidu.pdfIn PDF document text
  • http://bahtiyardishekimi.com/fckfiles/file/vukazidenakatuta.pdfIn PDF document text
  • http://smn68.com/clients/75339/File/rilovejuzunojenuxas.pdfIn PDF document text
  • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1f5c8efd9---wefixepeguridef.pdfIn PDF document text
  • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d60b3b0e1f5---29736466105.pdfIn PDF document text
  • http://www.tiande-global.com/ckfinder/userfiles/files/63576424028.pdfIn PDF document text
  • http://accomplishtheimpossible.com/userfiles_ati/file/dugus.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc0f0e39d9---81115859024.pdfIn PDF document text
  • http://druckmaschinenservice.com/uploads/fce/files/nijemolovewebo.pdfIn PDF document text
  • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/24eb04169c6958ab8c8f64840732d7df/51068609139.pdfIn PDF document text
  • https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/c60d0b721bec97c1fdd3710aba7e5076/xunumetarusetuxuzoxi.pdfIn PDF document text
  • http://kasystemofkarate.com/clients/861259/File/xekenovowefo.pdfIn PDF document text
  • https://hijaulumut.com/contents//files/23268550474.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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