Malicious PDF — malware analysis report

Heuristics 8

• 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 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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 https://chcial.ru/uplcv?utm_term=how+to+connect+an+android+phone+to+a+computer PDF link annotation

  • http://pnlestari.com/visitbali/image/files/50529434119.pdfIn PDF document text
  • http://siblom.ru/files/upload/file/zepidorujunox.pdfIn PDF document text
  • http://mazurubezpieczenia.pl/zdjecia/fck/file/xokiko.pdfIn PDF document text
  • http://ues-rb.ru/themes/ues-rb.ru/files/17238129799.pdfIn PDF document text
  • https://ppuhperspektywa.pl/files/edytor/file/mezatugovanifebozupo.pdfIn PDF document text
  • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e9f42be0dd---magadizivazegufiwepapam.pdfIn PDF document text
  • https://cheeselicious.net/UserFiles/file/bukajejasin.pdfIn PDF document text
  • http://dytac.hk/userfiles/fefunu.pdfIn PDF document text
  • http://davidhammerstein.org/ckfinder/userfiles/files/54896841682.pdfIn PDF document text
  • http://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/22328734774.pdfIn PDF document text
  • http://poledance-chrudim.cz/files/file/81202069326.pdfIn PDF document text
  • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fe409c221ac90eef5022e5af980e1f7b/86331235255.pdfIn PDF document text
  • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/01556eed8e8ac40d94759cd03077a566/sopaveruloximu.pdfIn PDF document text
  • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4580b2d7678b9a213dd2f72903b633c9/jifura.pdfIn PDF document text
  • http://king-ber.com/UploadFiles/file/20210907150314251.pdfIn PDF document text
  • https://livre-d-art.com/ckfinder/userfiles/files/74189456209.pdfIn PDF document text
  • http://kokocurry.gm/userfiles/file/66092242613.pdfIn PDF document text
  • http://www2.grupoksl.com.br/js/ckfinder/userfiles/files/29027604592.pdfIn PDF document text
  • https://portugaliaimagyarok.com/ckfinder/userfiles/files/17695494186.pdfIn PDF document text
  • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16136b3c6c7135---36153648294.pdfIn PDF document text
  • http://soosanfix.com/upload/fckeditor/file/64633466885.pdfIn PDF document text
  • http://soundspace.eu/Upload/file/falabuw.pdfIn PDF document text
  • http://wabasnb.com/files/fckeditor/file/70127778561449de6b9251.pdfIn PDF document text
  • http://omatsuri.kr/data/userfiles/files/30181337410.pdfIn PDF document text
  • https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/71518252043.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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