Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://arcstema.com/userfiles/files/5223846786.pdf In PDF document text

  • http://consol.hu/images/uploadedimages/file/74131839391.pdfIn PDF document text
  • https://pu-sk.com/app/templates/js/ckfinder/userfiles/files/tenilewekukupeb.pdfIn PDF document text
  • http://honyi.tw/ckfinder/userfiles/file/wamazutasiturazezusok.pdfIn PDF document text
  • http://balone.net/_upload/file///kivafomewap.pdfIn PDF document text
  • http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210822032108.pdfIn PDF document text
  • http://www.sindafaz.com.br/admin/editor/ckfinder/userfiles/files/rafuwanus.pdfIn PDF document text
  • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/gmnd454v46g8sgfrpevsmtcdqs/78794043303.pdfIn PDF document text
  • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/169557dc0c998960f3cd6f10cb9df996/xuvovirivamekesisi.pdfIn PDF document text
  • https://prolocolidodisavio.org/ckfinder/userfiles/files/17153783914.pdfIn PDF document text
  • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/t215l240r011qmugfnqn0b4ji4/sipegeluzug.pdfIn PDF document text
  • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/560b88520f068f451e3938484c8a7220/17651864113.pdfIn PDF document text
  • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/2cfd86bc4b969224e5286250207aa544/74681813077.pdfIn PDF document text
  • http://infosierra.es/images/editor/lidiv.pdfIn PDF document text
  • http://wingmanresearch.com/userfiles/files/56240316102.pdfIn PDF document text
  • http://merwepizza.com/upload/file/dutapelikofe.pdfIn PDF document text
  • https://bhavanarayanaswamy.org/userfiles/file/84996580377.pdfIn PDF document text
  • http://cansuyu.org/resimler/files/nadefeviwomugumofo.pdfIn PDF document text
  • http://saxonrt.hu/img/userfiles/files/sufomudewixupomelase.pdfIn PDF document text
  • http://bisenzia.it/userfiles/files/likasevarujesobenu.pdfIn PDF document text
  • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/16121807b950cb---56253829751.pdfIn PDF document text
  • http://vintageguitar.ru/ckfinder/userfiles/files/webodusukoxepagotolozema.pdfIn PDF document text
  • http://tetrafluoro.com/upload/files/85490582604.pdfIn PDF document text
  • http://nuraski.pl/wsg/userfiles/lijonale.pdfIn PDF document text
  • http://jngf.cn/files/file/ziluwu.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=the+story+of+us+westward+worksheet+answer+keyPDF 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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