Malicious PDF — malware analysis report

Heuristics 9

• 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.
• 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.
• Fake invoice / payment lure low SE_INVOICE_LURE
  Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
• 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://megat.pl/uploaded/fck_files/file/41462451288.pdf In PDF document text

  • http://gaishachuukobuhin.com/js/upload/files/56056289417.pdfIn PDF document text
  • http://lbtech.kr/upfile/files/90518583504.pdfIn PDF document text
  • http://aristosaigonhotel.com/uploads/files/gonujep.pdfIn PDF document text
  • http://iphysiology.ru/upload/52368099207.pdfIn PDF document text
  • http://live-lessons.net/lcj/web/uploads/assets/file/42601710385.pdfIn PDF document text
  • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5625f4eccc6f6dec9eb335a23df3c887/xulefuwivapoletitopen.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/jawefawuvuwika.pdfIn PDF document text
  • http://www.cddfct.com/up_files/file/53894152428.pdfIn PDF document text
  • http://doks-films.com/pcms/content/file/vipati.pdfIn PDF document text
  • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b1ebfc0fed2---vedixojojikolaruxazetefup.pdfIn PDF document text
  • http://alpha-th.com/userfiles/file/8289685283.pdfIn PDF document text
  • https://bibliothequeanglaise.org/upload/files/37578769593.pdfIn PDF document text
  • https://dagvandearchitectuur.be/_files/file/83512372974.pdfIn PDF document text
  • http://cnmrobotics.com/files/files/janezip.pdfIn PDF document text
  • http://aminotp.com/upload/files/movajanulibomopedamisurin.pdfIn PDF document text
  • http://nemdanangpho.com/uploads/2021-06-28/images/files/nurowosegafid.pdfIn PDF document text
  • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/fgb7rp0fblsbcbbnga9ao0nu53/sepajene.pdfIn PDF document text
  • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/1f24cffb2f232829b869f6a409269ec1/69347184073.pdfIn PDF document text
  • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160dcd97a9af49---73495901806.pdfIn PDF document text
  • http://s8radziejowice-paszkow.pl/userfiles/file/47753388829.pdfIn PDF document text
  • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0532b156b---10526631223.pdfIn PDF document text
  • http://tiszaladany.hu/upload/file/35374485848.pdfIn PDF document text
  • http://sireny.net/share/files/jipilorus.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=water+flow+in+pipes+pdfPDF 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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