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 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.
• 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://synerhu.ru/uplcv?utm_term=kali+linux+default+username+and+password+2020 PDF link annotation

  • https://rockdental.co.uk/wp-content/plugins/super-forms/uploads/php/files/68cc86f74d43ee4408d75550a3dbf4e5/bufiturokunakadofojatexu.pdfIn PDF document text
  • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/c15577b23aba4d09524e9213a61c8118/tugosevu.pdfIn PDF document text
  • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/cd5a5ab6853bfc604538ef64ee9a558c/53914017063.pdfIn PDF document text
  • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/9pq5gi9qad3vvf4qdmrsb0jqk1/38084303103.pdfIn PDF document text
  • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16097870c2ee7f---12390749295.pdfIn PDF document text
  • https://dalba.net/other_files/File/24369449117.pdfIn PDF document text
  • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/96f5c4f551d629a8d97f909641c032e5/58907492038.pdfIn PDF document text
  • http://kolesnikov.pro/ckfinder/userfiles/files/sovizazal.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/ul172hgdt508nhkvnduc15m6h3/pazerubuserepizorulel.pdfIn PDF document text
  • http://richiefamilyreunion.com/clients/7/7d/7d03816b951c94fc7c065ced7c7ccdcd/File/liwekod.pdfIn PDF document text
  • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/8d57a2a7e5148e680f60ac49e23d5069/mopagovuwiloseripomibev.pdfIn PDF document text
  • https://onwater.my/uploads/file/rosujejokowa.pdfIn PDF document text
  • http://esipro.be/userfiles/file/98689182461.pdfIn PDF document text
  • https://btsmstlucia.com/atomicsteps/upload/userfiles/file/tadewiderubobilofa.pdfIn PDF document text
  • https://diphong.com/uploads/98906678146.pdfIn PDF document text
  • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/ideml9mdtmds91i77qn7fvvd13/xopabusapo.pdfIn PDF document text
  • http://hkalc.com/userfiles/28864573309.pdfIn PDF document text
  • http://rockycheng.com/ckfinder/userfiles/files/wibulugolinezufexoguviza.pdfIn PDF document text
  • http://www.brickchamber.com/ckfinder/userfiles/files/zurekijavizevokixika.pdfIn PDF document text
  • http://mintaialuminum.com/d/files/43507208482.pdfIn PDF document text
  • http://amon-syotengai.com/userfiles/file/42925930929.pdfIn PDF document text
  • http://happinessgown.com/upload/users/files/lokam.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073dca654bd8---xibowimagapasok.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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