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.
• 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://hoangphatdanang.com/uploads/image/files/87853134941.pdf In PDF document text

  • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/161387b902b67a---32682385955.pdfIn PDF document text
  • http://www.palmettoexpresslanes.com/system/js/back/ckfinder/userfiles/files/696815849.pdfIn PDF document text
  • http://bdn10.cz/files/file/17118652284.pdfIn PDF document text
  • http://nprofit.hk/userfiles/porumovovowozubapimuja.pdfIn PDF document text
  • https://razredna-nastava.net/files/90735467195.pdfIn PDF document text
  • http://telegid.tv/userfiles/file/53631044989.pdfIn PDF document text
  • https://markaoyun.com/calisma2/files/uploads/88487579354.pdfIn PDF document text
  • http://biancoacolori.it/userfiles/files/wakirakebavin.pdfIn PDF document text
  • http://thibangoto.com/app/webroot/uploads/files/vujapepuribapegigavaxufo.pdfIn PDF document text
  • http://ttworld.hu/uploads/content_files/files/losibufemibivize.pdfIn PDF document text
  • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132a2f818270---zemabaravikilonufesotik.pdfIn PDF document text
  • http://manpukuorder.com/uploads/files/41768384841.pdfIn PDF document text
  • https://bizimpin.com/calisma2/files/uploads/bowiviketekigowinemuze.pdfIn PDF document text
  • http://ecohort.com/userfiles/files/2293903484.pdfIn PDF document text
  • http://flashdisplay.net/UploadFiles/FCKeditor/20210905052415.pdfIn PDF document text
  • https://worldcastlive.com/userfiles/file/63108520206.pdfIn PDF document text
  • https://szaniterplaza.hu/ckfinder/userfiles/files/34509691129.pdfIn PDF document text
  • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f1d702abc33145ab1c1fcd4f31bb71c5/98957042745.pdfIn PDF document text
  • http://peoplefoster.com/pliki/kugisu.pdfIn PDF document text
  • http://quanhoangtsi.com/upload/quangtri/files/80882956730.pdfIn PDF document text
  • http://jobsandhi.com/uploaded_files/userfiles/files/92553396719.pdfIn PDF document text
  • http://ambulatorioveterinariosanfrancesco.com/userfiles/files/58330847375.pdfIn PDF document text
  • http://taihegas.com/filespath/files/20210917142116.pdfIn PDF document text
  • http://kommunikator.nu/demo/userfiles/file///14908524230.pdfIn PDF document text
  • https://lapakunited.com/contents/files/16130760755.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=rocket+league+download+phonePDF link annotation
  • 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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