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://infrive.ru/uplcv?utm_term=words+that+start+with+o+adjectives PDF link annotation

  • http://eiak.org/upload/editor/files/gogutibaxa.pdfIn PDF document text
  • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160845f292d298---8462613664.pdfIn PDF document text
  • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/49702c58304a420d2669830bf8f17cc8/bivupujidado.pdfIn PDF document text
  • https://noddy.nu/images/file/kupazoxiregixoputipibo.pdfIn PDF document text
  • http://btfa.tw/upload/files/72036028103.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/4895272859.pdfIn PDF document text
  • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160901b100383a---58106307779.pdfIn PDF document text
  • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/6ac06b54fcc6cbecb19006399777dc6c/govepawaw.pdfIn PDF document text
  • https://praward.tw/wp-content/plugins/super-forms/uploads/php/files/39575b579d76b19be814fa22607497c7/zenagoxibaruv.pdfIn PDF document text
  • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a09a8692416---memopitorejizabor.pdfIn PDF document text
  • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/s8k42koo0m8mr20t0quprnn5bk/xewuwuxanimun.pdfIn PDF document text
  • http://career-id.org/ckfinder/userfiles/files/1062585678.pdfIn PDF document text
  • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071ded67636c---46774729867.pdfIn PDF document text
  • https://morabia.fi/images/file/mowupesotasikowozidir.pdfIn PDF document text
  • https://chameleoncoupons.com/adgprocessing/uploads/files/68102456904.pdfIn PDF document text
  • https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/e7985440ca71be2157cbe7b8c25aabf2/luwawera.pdfIn PDF document text
  • https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/0ab3780d659acd9632470e1f6525b3ac/vixojexedo.pdfIn PDF document text
  • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a6e648e375---91592722402.pdfIn PDF document text
  • https://drlanda.hu/user/file/69916625767.pdfIn PDF document text
  • https://wfca-czech.cz/temp/userfiles/files/dejoduwujepimalegagerexe.pdfIn PDF document text
  • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/089p4cf84tslm5h9jgtdiqb693/47749932089.pdfIn PDF document text
  • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/c76f02ae04b1ad1a911cb7dcf1eb3913/85144226369.pdfIn PDF document text
  • https://stbenedikt.ch/userfiles/files/13389978687.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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