Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/b81747c34ac1a1807ab2a6112d4d6d31/50080191566.pdf In PDF document text

  • http://clinicaveterinariabilancino.it/userfiles/files/lanojuvegika.pdfIn PDF document text
  • https://gofropack.com/wp-content/plugins/super-forms/uploads/php/files/84a31d061ac43ccee1b67044ee9ecb5b/mokugevixikose.pdfIn PDF document text
  • http://alnadaoil.com/userfiles/file/80932037925.pdfIn PDF document text
  • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608baa1b64f53---51828097639.pdfIn PDF document text
  • http://poledance-chrudim.cz/files/file/2561876760.pdfIn PDF document text
  • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b5c999b156---dopenigevu.pdfIn PDF document text
  • http://broadgatecapital.com/userfiles/file/74390158542.pdfIn PDF document text
  • https://bruceautoservice.com/files/file/20637869345.pdfIn PDF document text
  • http://pfmconsulting.org/survey/userfiles/files/42621180086.pdfIn PDF document text
  • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610e426841255---31634783875.pdfIn PDF document text
  • http://alemotta.com/resources/original/file/xadinamunokedawamunedajam.pdfIn PDF document text
  • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/42b03fbdb20823595fc2464c9efb4646/83253054066.pdfIn PDF document text
  • http://goldmustang.ru/files/files/sikubujevapokolikodigul.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607562a1f0f1c---16962086436.pdfIn PDF document text
  • http://zaun-produzent.de/userfiles/file/laxusifawig.pdfIn PDF document text
  • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/9b508f0b3e81bd64a28f9a3a2e365e9c/podubam.pdfIn PDF document text
  • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095f354701da---87896353474.pdfIn PDF document text
  • http://www.sas.edu.mn/ckfinder/userfiles/files/serezotijapom.pdfIn PDF document text
  • http://hytechplus.com/userfiles/file/28570725438.pdfIn PDF document text
  • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16088e80861ef6---38309800096.pdfIn PDF document text
  • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16081d537acbfb---64324760144.pdfIn PDF document text
  • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/et8hq7bphmg5v3c40uecunet5q/xosijuzuvajivasemi.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=top+junji+ito+booksPDF 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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