Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
  Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
• Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
  Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://krisoc.ru/uplcv?utm_term=free+sms+node+js.
• 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://krisoc.ru/uplcv?utm_term=free+sms+node+js PDF link annotation

  • http://guanzhuli.com/userfiles/file/73636339766.pdfIn PDF document text
  • http://huh.hu/UserFiles/File/gukoruxuxerakawolazado.pdfIn PDF document text
  • http://extrastyle.ee/ckfinder/userfiles/files/15500025922.pdfIn PDF document text
  • http://avalon-essenzen.at/userfiles/file/tijarikewanorijiwamewato.pdfIn PDF document text
  • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/161368c5dcf80b---20595888509.pdfIn PDF document text
  • http://giteduguedesboires.com/userfiles/file/nofutisis.pdfIn PDF document text
  • http://tootingtaxi.com/survey/userfiles/files/wovorizawapote.pdfIn PDF document text
  • https://cartolmania.it/file/jasunab.pdfIn PDF document text
  • http://runwellconsulting.eu/file/file/fabideniriseper.pdfIn PDF document text
  • http://hypotekaprezamestnancov.sk/res/file/93001600031.pdfIn PDF document text
  • https://cfacgroup.com/uploads/FCK_files/file/dujigafigaxekikur.pdfIn PDF document text
  • http://velomagazin.hu/UserFiles/file/80336951450.pdfIn PDF document text
  • https://solener.info/ckfinder/userfiles/files/81186312699.pdfIn PDF document text
  • http://waxiangyuan.com/upload_fck/file/2021-9-7/20210907110814898685.pdfIn PDF document text
  • http://metallpress.ru/files/46319927341.pdfIn PDF document text
  • https://bselink.com/userfiles/file/23689751574.pdfIn PDF document text
  • http://apartament-krokus.pl/userfiles/file/tudok.pdfIn PDF document text
  • https://karlschool.org/uploads/files/202109060004124890.pdfIn PDF document text
  • http://usateatop.com/_upload/files/19620826494.pdfIn PDF document text
  • http://permanentnimakeup-brno.cz/userfiles/files/19117572018.pdfIn PDF document text
  • http://xn--365-pn7mwb654m2qn.com/ckupload/files/nosulejafojutemulexojo.pdfIn PDF document text
  • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ad0b6aeee77e54de80f9affd1e44e2cf/22317490223.pdfIn PDF document text
  • http://hanaelectric.com/userData/board/file/1705373774.pdfIn PDF document text
  • http://hasadtemizlik.com/upload/file/tegawanufageleritu.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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