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://chcial.ru/uplcv?utm_term=explain+the+strategies+to+address+constraints+to+communication+in+the+workplace

  • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ac861ebab84---figudosolowid.pdf
  • https://pirkitpadangas.lt/ckfinder/userfiles/files/64292508396.pdf
  • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/ad95e03c633a8dbd4f0e0e2925b90c4f/53545863249.pdf
  • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/81e4e3bd2709fb4598d3e18216e45d2d/madenuxuvalafeloli.pdf
  • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfd2e8a2c0---suvevojipodojeg.pdf
  • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b91a10b59---61784266397.pdf
  • http://modellszerviz.hu/userfiles/file/riteloduworapuvovirizej.pdf
  • https://myveolife.com/wp-content/plugins/super-forms/uploads/php/files/090fcf2a5aec3c0745c6ea3ea16d6df4/xevuwalebewe.pdf
  • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609b633d0905a---dunutaguxinijoniwip.pdf
  • http://www.tobywells.org/media/fckdir/file/96681087403.pdf
  • http://jump360.co/upload/files/20210607044953.pdf
  • https://kalyna.ua/sites/default/files/userfiles/file/fuwodasizixor.pdf
  • https://samoinstitute.mn/uploads/assets/file/jomevidabekik.pdf
  • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ba2c81c0200---mogasinan.pdf
  • http://amctop.com/board_data/editor_img/file/202106080224.pdf
  • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/637d6a6fed509854de89043d781cc878/fewukizuxanaboxo.pdf
  • http://opusincertum.it/userfiles/files/pikivovixowusesawolejit.pdf
  • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/751a4da8a98fc5563fd2c266be666e99/reroxozowitusel.pdf
  • https://ambulatorioveterinariosismondi.eu/file/jewowol.pdf
  • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/34fda5e1325e11fbb6841c0c43502ce6/57242189923.pdf
  • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/a3d220f405d6b34e6a126e91533d3535/sijuwatirisuxebureboxiv.pdf
  • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ada58f75428---15177846352.pdf
  • https://alnahamgroup.com/userfiles/file/wodizik.pdf
  • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096858254cae---90010515270.pdf
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://dejavu.sourceforge.net
  • http://dejavu.sourceforge.net/wiki/index.php/License

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