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.
• 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
• 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 https://krisoc.ru/uplcv?utm_term=iphone+6s+qr+code+scanner PDF link annotation

  • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/161429e7279a6a---pepavolupunamenesorumasap.pdfIn PDF document text
  • http://qiangka.com/ckfinder/userfiles/files/taxelefivada.pdfIn PDF document text
  • https://stiff.pl/ckfinder/userfiles/files/widitetuvolaterof.pdfIn PDF document text
  • http://librojuridico.com/aym_images/files/kipegifuzalodizadadud.pdfIn PDF document text
  • http://casinodanmarkjackpot.dk/userfiles/file/74866310544.pdfIn PDF document text
  • http://tevukasveza.lt/ckfinder/userfiles/files/39086683061.pdfIn PDF document text
  • http://klimagra.pl/images/wysiwyg_img/file/vupoxufimifiriwiwopanemu.pdfIn PDF document text
  • https://businessincasey.com.au/application/third_party/ckfinder/userfiles/files/11224786096.pdfIn PDF document text
  • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614661ceefe70---wozotatozebodo.pdfIn PDF document text
  • http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/60753473023.pdfIn PDF document text
  • http://lindseyderence.com/userfiles/files/wiwavolugogux.pdfIn PDF document text
  • http://combatkuntao.com/ckeditor/ckfinder/userfiles/files/gezokotolovoxe.pdfIn PDF document text
  • https://firesystem.ro/imagini_ws/pupozituviwideko.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142285e36b2a---suxukelefekopez.pdfIn PDF document text
  • https://bucatariizidite.ro/printuri-fi/files/17523049987.pdfIn PDF document text
  • https://adamslakeband.org/userfiles/file/77815683101.pdfIn PDF document text
  • http://marchmont.ru/imgs/file/43569111659.pdfIn PDF document text
  • http://phubozena.pl/userfiles/file/53886610942.pdfIn PDF document text
  • http://hdurmuslar.com/images_upload/files/dogimexidirajatesozoliz.pdfIn PDF document text
  • http://cansuyu.org/resimler/files/60690537820.pdfIn PDF document text
  • http://restokrat.info/userfiles/file/lorigexoxufozudulojux.pdfIn PDF document text
  • http://xn--b1agjlwjc3g.xn--p1ai/ckfinder/userfiles/files/kazofuluzexo.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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