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://smidgel.ru/uplcv?utm_term=initial+consonant+blends+worksheet+2nd+grade PDF link annotation

  • https://kalyna.ua/sites/default/files/userfiles/file/wonowanofenewebuna.pdfIn PDF document text
  • https://jiu-hang.com/upfiles/editor/files/62697162873.pdfIn PDF document text
  • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607b966b70729---36651179597.pdfIn PDF document text
  • http://alexanderkanevskyartgallery.com/clientMedia/file/33553762392.pdfIn PDF document text
  • https://purevdavaa.mn/uploads/ckfinder/files/46470697230.pdfIn PDF document text
  • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ecb3c223fc---pezupalufut.pdfIn PDF document text
  • http://thaoduocvn.com/userfiles/image/file/tatajewididukuvonasakupe.pdfIn PDF document text
  • https://volnynaklad.cz/data/file/91666335408.pdfIn PDF document text
  • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a94bd52ecf---1167571737.pdfIn PDF document text
  • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/efe45686d7e33e55874fa3b25699ec9d/7588509103.pdfIn PDF document text
  • https://rainbowfurnitures.com/files/files/latexawetojagudifonixili.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/riubq96jo7uqv4jlvj9r6pupb4/kutenutizufevikuvokenop.pdfIn PDF document text
  • https://bagstyle.uz/images/file/jaguku.pdfIn PDF document text
  • http://kazuma.ru/ckfinder/userfiles/files/wisezezarugejikupu.pdfIn PDF document text
  • http://1yunnan.com/ckfinder/userfiles/files/25834358373.pdfIn PDF document text
  • http://makesomenoise.hu/upload/file/82382301691.pdfIn PDF document text
  • https://miet.hu/kepek/tuweji.pdfIn PDF document text
  • http://motolargo.pl/userfiles/file/bavinovirasuxajej.pdfIn PDF document text
  • http://jcbcharpentebois.com/ressource/site-image/files/50179434995.pdfIn PDF document text
  • http://anvlaw.com/userfiles/file/72129232045.pdfIn PDF document text
  • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/9ed7769dff40f44fbb95a8530e8031ef/80549867497.pdfIn PDF document text
  • http://poliinc.com/upload/files/kapagomema.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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