Malicious PDF — malware analysis report

Heuristics 5

• 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.
• 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 http://aihyang.com/userfiles/file/57752827474.pdf In PDF document text

  • http://kubabus.cz/novy-web/upload/file/29946269392.pdfIn PDF document text
  • https://kusistoconstruction.com/userfiles/file/79733053664.pdfIn PDF document text
  • http://gartenstadt-apotheke.com/userfiles/file/ligejax_nalujegu.pdfIn PDF document text
  • http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/dopiguravitu.pdfIn PDF document text
  • http://bebsulmare.com/userfiles/files/xarovegegapuk.pdfIn PDF document text
  • http://jgsgj365.com/upload/file/220904108460.pdfIn PDF document text
  • http://museociviltacontadina.com/userfiles/files/xefewata.pdfIn PDF document text
  • http://rracc.com/file_media/file_image/file/wokub.pdfIn PDF document text
  • http://lf12366.com/userfiles/file/20250522060915_1776927423.pdfIn PDF document text
  • http://sbsinternationalschool.org/userfiles/file/54431765236.pdfIn PDF document text
  • http://hun777.hu/_user/file/51982775911.pdfIn PDF document text
  • http://pitchdecor-construction.com/user_img/files/58120687598.pdfIn PDF document text
  • http://gardensyellowcab.com/admin/images/file/9872796609.pdfIn PDF document text
  • http://unicaconsultoriarh.com/images/files/735220888.pdfIn PDF document text
  • http://duplisite.com/userfiles/file/4e9ea45a-ca8b-472f-8131-6cec817636b2.pdfIn PDF document text
  • https://comillaspostgrado.es/userfiles/file/rajope_pewejix.pdfIn PDF document text
  • http://bugskin.org/userfiles/file/7607217888.pdfIn PDF document text
  • https://rumuveniresus.tugoduzak.com/510212360974380249174284153921189618551752?nikitepubumudirutapipodixawadofosivavuluxexekakuwosusuzedepemizojerobolurufejumupixamibu=pixufafimixudiromujolikavuxugasesezugakusenavefidizonoxizowivasonurobisizojaxepigovigoxaziwenoxapenuvobasomagufoganipumewujufizofevijojojusizifokolakalajidusaxodavufetukoxinudurezijinanilobiraxatomugufedolosuvi&utm_term=hr+wells+fargo&zatudupovefilarelinetevefera=kekidowafodejaravubogulumejalepewezaputivobusilokafufokerabarosuduvegulukuzinamaduxikowarigapawuxajuzuzugedaxigajujixiwenuxevidudoxagupuzuduf)/Type/ActionIn PDF document text
  • http://aihyang.com/userfiles/file/57752827474.pdf)/Type/ActionIn PDF document text
  • http://kubabus.cz/novy-web/upload/file/29946269392.pdf)/Type/ActionIn PDF document text
  • https://kusistoconstruction.com/userfiles/file/79733053664.pdf)/Type/ActionIn PDF document text
  • http://gartenstadt-apotheke.com/userfiles/file/ligejax_nalujegu.pdf)/Type/ActionIn PDF document text
  • http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/dopiguravitu.pdf)/Type/ActionIn PDF document text
  • http://bebsulmare.com/userfiles/files/xarovegegapuk.pdf)/Type/ActionIn PDF document text
  • http://jgsgj365.com/upload/file/220904108460.pdf)/Type/ActionIn PDF document text
  • http://museociviltacontadina.com/userfiles/files/xefewata.pdf)/Type/ActionIn PDF document text
  • http://rracc.com/file_media/file_image/file/wokub.pdf)/Type/ActionIn PDF document text
  • http://lf12366.com/userfiles/file/20250522060915_1776927423.pdf)/Type/ActionIn PDF document text
  • http://sbsinternationalschool.org/userfiles/file/54431765236.pdf)/Type/ActionIn PDF document text
  • http://hun777.hu/_user/file/51982775911.pdf)/Type/ActionIn PDF document text
  • http://pitchdecor-construction.com/user_img/files/58120687598.pdf)/Type/ActionIn PDF document text
  • http://gardensyellowcab.com/admin/images/file/9872796609.pdf)/Type/ActionIn PDF document text
  • http://unicaconsultoriarh.com/images/files/735220888.pdf)/Type/ActionIn PDF document text
  • http://duplisite.com/userfiles/file/4e9ea45a-ca8b-472f-8131-6cec817636b2.pdf)/Type/ActionIn PDF document text
  • https://comillaspostgrado.es/userfiles/file/rajope_pewejix.pdf)/Type/ActionIn PDF document text
  • http://bugskin.org/userfiles/file/7607217888.pdf)/Type/ActionIn PDF document text
  • https://rumuveniresus.tugoduzak.com/510212360974380249174284153921189618551752?nikitepubumudirutapipodixawadofosivavuluxexekakuwosusuzedepemizojerobolurufejumupixamibu=pixufafimixudiromujolikavuxugasesezugakusenavefidizonoxizowivasonurobisizojaxepigovigoxaziwenoxapenuvobasomagufoganipumewujufizofeviPDF link annotation
  • https://rumuveniresus.tugoduzak.com/510212360974380249174284153921189618551752?nikitepubumudirutapipodixawadofosivavuluxexekakuwosusuzedepemizojerobolurufejumupixamibu=pixufafimixudiromujolikavuxugasesezugakusenavefidizonoxizowivasonurobisizojaxepigovigoxaziwenoxapenuvobasomagufoganipumewujufizofevijojojusizifokolakalajidusaxodavufetukoxinudurezijinanilobiraxatomugufedolosuvi&utm_term=hr+wells+fargo&zatudupovefilarelinetevefera=kekidowafodejaravubogulumejalepewezaputivobusilokafufokerabarosuduvePDF link annotation
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://ns.adobe.com/iX/1.0/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://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text

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