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
• 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.
• 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=amoeba+sisters+introduction+to+cells+worksheet+answers PDF link annotation

  • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861db9d7e2a---45738186301.pdfIn PDF document text
  • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160756fe563650---35213657226.pdfIn PDF document text
  • http://bezpiecznamlodosc.org/files/file/vonasimenozizobeseweb.pdfIn PDF document text
  • http://szakkepzosiklos.hu/upload/file/vevaga.pdfIn PDF document text
  • http://virtualcharityevents.com/vce_cake/files/files/gadagevone.pdfIn PDF document text
  • http://nadiadsa.org/userfiles/file/80579000435.pdfIn PDF document text
  • http://abwjefferson.com/uploads/files/12299725508.pdfIn PDF document text
  • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b20d2f35143---21538961258.pdfIn PDF document text
  • https://nicklason.se/ckfinder/userfiles/files/25090011036.pdfIn PDF document text
  • http://banner-ever.com/ckImg/files/zakipifikaxejizejo.pdfIn PDF document text
  • http://giorgimpianti.com/userfiles/file/nopav.pdfIn PDF document text
  • https://cylinder96.ru/admin/ckfinder/userfiles/files/9901815805.pdfIn PDF document text
  • http://alphabodysupplements.com/newerac2c/userfiles/file/7123578456.pdfIn PDF document text
  • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/ecf676d303366f3ceaf99105859c3ba4/99318383507.pdfIn PDF document text
  • https://newsru.md/upload/userfiles/files/tixesipeponef.pdfIn PDF document text
  • http://olversonfamilyreunion.org/clients/5/51/51a48c89da211807e19ed56f8a1a1822/File/xiporikuna.pdfIn PDF document text
  • http://aodaibooking.com/FileData/ckfinder/files/20210623_C63B9DAC5A2B1ED8.pdfIn PDF document text
  • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b12c004e7dd---67357787985.pdfIn PDF document text
  • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/elmld283inmqhk1v0dhftl9m51/31631583487.pdfIn PDF document text
  • http://tantex.org/tantex/tantexuserfiles/file/16488720540.pdfIn PDF document text
  • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160987e1a97600---66228062264.pdfIn PDF document text
  • http://chpcentre.com/files/file/pofujadiluvatotiwev.pdfIn PDF document text
  • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc5ba0a9f63---69045987372.pdfIn PDF document text
  • https://samngaimarble.com/html_upload/file/jojal.pdfIn PDF document text
  • https://nutricount.cz/UserFiles/File/26961929447.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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