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 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.
• 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://queure.ru/uplcv?utm_term=como+conectar+android+a+mac+por+usb PDF link annotation

  • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613647a27675e---79519676913.pdfIn PDF document text
  • https://zebcom.in/userfiles/file/lexatoxewe.pdfIn PDF document text
  • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613043f0bf028---96333953381.pdfIn PDF document text
  • http://sartoriaventurini.com/userfiles/files/32875355683.pdfIn PDF document text
  • http://iktoktatas.hu/files/file/97692529483.pdfIn PDF document text
  • http://ajk-opakowania.eu/upload/fck/file/29167238613.pdfIn PDF document text
  • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/241d29088cd90c7e59d57fbd53107555/mimigo.pdfIn PDF document text
  • https://ropaalmayoreo.com/images/userfiles/file/77912887844.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/m99cmfnkknbhppkn26faqak231/77608718192.pdfIn PDF document text
  • http://phunphu.com/userfiles/file/21470228375.pdfIn PDF document text
  • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16149330ac4ed1---98444911203.pdfIn PDF document text
  • https://uleshuzatabc.hu/files/file/32414911238.pdfIn PDF document text
  • https://yennenga.org/business_school/uploads/file/94000631385.pdfIn PDF document text
  • http://matras-devison.com/upload/file/xikovuferetizozosulu.pdfIn PDF document text
  • http://ceskylakros.cz/userfiles/file/kaminubasokawa.pdfIn PDF document text
  • http://anbao.vn/uploads/userfiles/file/17958980872.pdfIn PDF document text
  • http://shopabrang.com/images/files/fulogojunikilulovu.pdfIn PDF document text
  • https://citronixdeflection.com/nbloom/fckuploads/file/69634228128.pdfIn PDF document text
  • http://195exim.com/datas/files/14339236560.pdfIn PDF document text
  • https://djecijagarderoba.me/userfiles/file/zepatopexekavedemek.pdfIn PDF document text
  • http://optykglowacki.pl/obrazki/files/zowejujunato.pdfIn PDF document text
  • http://tsnpharma.com/upload/files/94744960122.pdfIn PDF document text
  • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/161337fc74fde0---kofedef.pdfIn PDF document text
  • http://lawfirm.vn/MINH/user_files/file/17591755473.pdfIn PDF document text
  • http://sincaremedicaltour.com/js/upload/kinorafavamavusux.pdfIn PDF document text
  • http://salkim.com/userfiles/file/jamikuvorekuromizoz.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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