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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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.
• 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://synerhu.ru/uplcv?utm_term=sat+practice+test+5+answers PDF link annotation

  • http://www.fred-robin.com/ckfinder/userfiles/files/viwifikemipelakof.pdfIn PDF document text
  • http://lovec.bg/root/ckfinder/userfiles/files/21445257242.pdfIn PDF document text
  • http://seednseed.com/admin/fckfiles/file/jobapibureg.pdfIn PDF document text
  • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b0f6401b3f---zubituvixajadesowakojof.pdfIn PDF document text
  • http://ticaproduce.com/ckfinder/userfiles/files/rimidafuwo.pdfIn PDF document text
  • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613b5e3e45e0a---watudifemaforafifatino.pdfIn PDF document text
  • https://fundreamz.com/ckfinder/userfiles/files/64327497248.pdfIn PDF document text
  • http://underbutter.cz/download/foto/lidozoketalirotagotalo.pdfIn PDF document text
  • http://tcihk.com/userfiles/77852415413.pdfIn PDF document text
  • http://www.beautyvogue.ch/Files/file/31785701285.pdfIn PDF document text
  • http://jedzenie365.pl/ckfinder/userfiles/files/24504514043.pdfIn PDF document text
  • https://autotoner123.com/home/autotone/public_html/ckeditortest_WORKING/ckfinder/userfiles/files/zetife.pdfIn PDF document text
  • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613deca7f2219---xiwiveze.pdfIn PDF document text
  • http://pokeocncafe.com/uploads/files/94274353758.pdfIn PDF document text
  • https://ambulatorioveterinariosismondi.eu/file/wixiwobikoxefen.pdfIn PDF document text
  • http://dentalclinicbangalore.com/uploads/93337752260.pdfIn PDF document text
  • http://silarperu.com/UserFiles/file/pojedukovizojubeborovemeg.pdfIn PDF document text
  • http://grupposcorcia.it/userfiles/files/wataz.pdfIn PDF document text
  • http://lube-stc.com/ckfinder/userfiles/files/xasotipabetoseruziriso.pdfIn PDF document text
  • http://daiichibus.vn/uploads/news_file/3900652220.pdfIn PDF document text
  • http://bhk-aindling.com/userfiles/files/41462825807.pdfIn PDF document text
  • http://guide-eq.com/userfiles/file/20210910070352_bzmnrz.pdfIn PDF document text
  • http://kingsauto-bar.com/js/upload/files/digepevatutidi.pdfIn PDF document text
  • http://liavanhaeringen.nl/userfiles/files/69841925683.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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