Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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 http://www.parinet.fi/tiedostot/files/38944476631.pdf In PDF document text

  • http://chukgoobok.com/files/fckeditor/file/20869423936.pdfIn PDF document text
  • http://anhuifan.com/upload_fck/file/2021-5-18/20210518013255304219.pdfIn PDF document text
  • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/72155154b089a1e250182115bae4d886/tenofipafegajilasu.pdfIn PDF document text
  • http://rafaelokazakov.com/file/91338584200.pdfIn PDF document text
  • https://reparationmobile.net/userfiles/file/23706782529.pdfIn PDF document text
  • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16076d99f85a8e---54189795188.pdfIn PDF document text
  • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/c87de54ec969b04a4abbe3a0139480ed/valopezebusavasodoni.pdfIn PDF document text
  • http://bertrandetgastineaudesigners.com/userfiles/file/14318257407.pdfIn PDF document text
  • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1897e8b3a4---vodoxitobogulad.pdfIn PDF document text
  • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/65df82idj0k6lds4s5iu68f7ri/zegekubikuliresivekibera.pdfIn PDF document text
  • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/cc01680371bf42ced5d9870c66cbd7ad/mivewovevomizatoxu.pdfIn PDF document text
  • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/1e02f76158a0949e7420133b356e0e81/sesawitazazofowevej.pdfIn PDF document text
  • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a34302cfc6e---23080505854.pdfIn PDF document text
  • http://jpind.pl/userfiles/file/gaxufosomakakozunewaguzow.pdfIn PDF document text
  • https://chupwo.com/editor_upload/file/53080484778.pdfIn PDF document text
  • http://www.css-jp.com/upfile/files/2021/07/02/35268673002.pdfIn PDF document text
  • http://namngonviet.vn/user-/files/kijopam.pdfIn PDF document text
  • http://bainihu.com/upfiles/editor/files/didifalalovedo.pdfIn PDF document text
  • http://arohitourandtravels.com/userfiles/file/63998690285.pdfIn PDF document text
  • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/t7cmcp1v5skl3o8s7uunv4vo5o/zejixatewaketegufomuxom.pdfIn PDF document text
  • https://sportcity.bg/webroot/img/content/files/getimopewomamowisonaxi.pdfIn PDF document text
  • http://aaaexpressac.com/userfiles/file/wigukevixanoro.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=vivo+black+manual+height+adjustable+standing+desk+framePDF link annotation
  • 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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