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://catamma.ru/uplcv?utm_term=paper.io+2+unblocked+66 PDF link annotation

  • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1608a98ae31af9---67530643281.pdfIn PDF document text
  • http://beergolfers.com./blog/images/file/xelowurexef.pdfIn PDF document text
  • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6e4hir82k76hjjh1ujo80fdoj0/musojajulilo.pdfIn PDF document text
  • https://lucky-erotic-massage-bucharest.ro/ckfinder/userfiles/files/18709303489.pdfIn PDF document text
  • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f175e885d4---lipurorisi.pdfIn PDF document text
  • http://sofia-es.tokyo/yamituki-n/uploads/files/kodotuwegimobekazojogor.pdfIn PDF document text
  • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/36ehe8lgnp75qq9evs1thcdvld/vepesirevitovapok.pdfIn PDF document text
  • http://skupka23.ru/upload/m/wozutez.pdfIn PDF document text
  • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/0b2448468c857063993a583e4dad8fea/zuvoninifoworoneza.pdfIn PDF document text
  • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baa7bcc73f7---jerusanup.pdfIn PDF document text
  • http://optimaglobal.net/ckupload/files/juvuf.pdfIn PDF document text
  • https://cottonweb.net/userfiles/file/85555656270.pdfIn PDF document text
  • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/a698da65cc405be3e35c0a7b54cb8c81/javapuzumarafusepe.pdfIn PDF document text
  • https://ludifrance.fr/userfiles/file/lekuxim.pdfIn PDF document text
  • https://windsbs.biz/files/file/vutiw.pdfIn PDF document text
  • https://houstoncoinshow.org/FCKeditor/file/pirupobisoruj.pdfIn PDF document text
  • http://www.ecvbrass.ch/user/web/file/2343898008.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/ob0jipsf7kq99dar9d1oc9hb13/79929128906.pdfIn PDF document text
  • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/f7bccfb46e93ea8bd5da7227247731c2/28731434135.pdfIn PDF document text
  • https://juhaszautovill.hu/userfiles/file/41994792214.pdfIn PDF document text
  • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/f2c27f1e04b9af8acc9e714151e78a71/10416509292.pdfIn PDF document text
  • http://isisthailand.org/file_media/file_image/file/90458916338.pdfIn PDF document text
  • http://capitaloffice.pl/fotki/file/tezamow.pdfIn PDF document text
  • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607951b749521---40726374981.pdfIn PDF document text
  • https://radio-aurea.eu/files/file/14754447600.pdfIn PDF document text
  • http://xn--82cac8d3ajrc0gd0bo4a7nf3qg.com/userfiles/files/sabeninegubo.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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