Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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 http://falls67.com/clients/50406/File/9894629685.pdf In PDF document text

  • https://immo-cjeanpaul.lu/userfiles/files/bopel.pdfIn PDF document text
  • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16092ce9278cd7---tavanawelosodolozuroxoni.pdfIn PDF document text
  • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/n6ngt5s77hl5as80mrenomb0ln/87400931210.pdfIn PDF document text
  • http://njxinbell.com/upload/files/1070034044.pdfIn PDF document text
  • http://hyundaihungthinh.com/uploads/images/files/dibugake.pdfIn PDF document text
  • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1611ad40a18346---gadeda.pdfIn PDF document text
  • https://www.orthovision-lublin.pl/ckfinder/userfiles/files/24398809440.pdfIn PDF document text
  • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/lb9c66m5iv2fqctd3f3ad139b2/kiwotukasojajosuj.pdfIn PDF document text
  • https://okud-istra.hr/userfiles/file/malakos.pdfIn PDF document text
  • http://master-br.ru/img/file/supekid.pdfIn PDF document text
  • https://premium-house.uz/images/file/xamafinuzaromebipiw.pdfIn PDF document text
  • http://bjzjygj.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/gavixejidegevifezojusigus.pdfIn PDF document text
  • http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/90240863319.pdfIn PDF document text
  • http://aescantabria.es/upload/fckeditor/file///62880186927.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/bodolokabuwekulekuro.pdfIn PDF document text
  • https://anakaygame.com/calisma2/files/uploads/pogawimosazo.pdfIn PDF document text
  • http://tentimesneedlehill.com/UPFILE/userfiles/files/mazidetorovovexokigag.pdfIn PDF document text
  • http://norview63.com/clients/5/59/59ba6e1aa7224642a1eeb14435756cbf/File/33380138085.pdfIn PDF document text
  • http://domholidays.com/userfiles/file/818386950.pdfIn PDF document text
  • http://www.annaleehuber.com/content_files/file/jolujug.pdfIn PDF document text
  • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f40d559b74---79486705324.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=stenographer+book+pdf+downloadPDF link annotation
  • https://cakamuzejs.riga.lv/ckfinder/userfiles/files/jedadedoxakibutikidovav.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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