Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://inwebjor.ru/uplcv?utm_term=crohn%27s+disease+vs+ulcerative+colitis+pdf PDF link annotation

  • https://gangnampools.com/contents//files/89380599720.pdfIn PDF document text
  • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/nvtom2e9i6574dt1etqujri8rl/duvijapog.pdfIn PDF document text
  • http://yuanyoujie.vip/userfiles/file/fupug.pdfIn PDF document text
  • http://shtaket46.ru/page_edit/_samples/userfiles/files/tijalopuwup.pdfIn PDF document text
  • https://leavereview.com/customerinterview/ckfinder/userfiles/files/fukizik.pdfIn PDF document text
  • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/8k24f1d0mp3p0i8j78s4uliflb/75332214878.pdfIn PDF document text
  • http://cherishedmomentphotos.com/clients/8/84/84fe84b553acfcd191e166b7401b6f02/File/xinesonavekuxodujopuf.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/judr8nqlpn1m1die1rcdf3anc0/75023417742.pdfIn PDF document text
  • http://kehlux.lu/userfiles/files/joferesugenek.pdfIn PDF document text
  • https://alarouba.com/ckfinder/userfiles/files/59890246060.pdfIn PDF document text
  • http://unionzglobal.com/ckupload/files/gaxesofabupulemid.pdfIn PDF document text
  • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d10c03c590---norusuxowunopew.pdfIn PDF document text
  • https://bearings.vn/images/ckeditor/files/duxexatitoxujadog.pdfIn PDF document text
  • http://gallery4walls.com/upload/editer/file/zuxasotajod.pdfIn PDF document text
  • http://lnyuanzong.com/uploads/files/20210815012816.pdfIn PDF document text
  • http://dfwsedan.com/nbloom/fckuploads/file/23673996093.pdfIn PDF document text
  • https://xn--hjrnskadeakademien-mtb.se/userfiles/file/38208168240.pdfIn PDF document text
  • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161270b462acc6---51580909532.pdfIn PDF document text
  • http://focostrade.com/files/20210628042823.pdfIn PDF document text
  • https://epponline.com/mentorfinancial/page_images/file/20849708011.pdfIn PDF document text
  • http://www.tomasjelinek.com/img/pub/file/reros.pdfIn PDF document text
  • http://sungsam.net/userData/board/file/jexelamezemirape.pdfIn PDF document text
  • http://smn68.com/clients/75339/File/53918421874.pdfIn PDF document text
  • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160850297ae359---rofefunuterig.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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