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
• 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://catamma.ru/uplcv?utm_term=hmh+civics+textbook+pdf.
• 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://catamma.ru/uplcv?utm_term=hmh+civics+textbook+pdf PDF link annotation

  • https://www.blondel-bois.fr/ckfinder/userfiles/files/volepeluxenoguk.pdfIn PDF document text
  • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/8svltk47k7fes2ofqo4vs4se8u/giwujugodabifu.pdfIn PDF document text
  • https://adepotcustom.com/UploadFiles/file/20210727030055194.pdfIn PDF document text
  • http://litho-and-co.fr/ckeditor/upload/files/56916744436.pdfIn PDF document text
  • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/7d5fe86c1bf90533e14efee507cf3726/bamarizimotanagapader.pdfIn PDF document text
  • http://nfc.soo.jp/file/30330112687.pdfIn PDF document text
  • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/9vs3vbjf0tag2pavv9vusrcej7/50036571756.pdfIn PDF document text
  • http://ztkammer.at/uploads/file/97095859599.pdfIn PDF document text
  • http://hunting.kg/userfiles/file/28140837286.pdfIn PDF document text
  • http://i-harmonics.com/upload/files/65936085317.pdfIn PDF document text
  • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/ve4gbol8r8ubn1utnpk8615c81/36824811451.pdfIn PDF document text
  • https://giridhareye.org/ckfinder/userfiles/files/41149044925.pdfIn PDF document text
  • https://ms01bet.net/contents//files/kuvufuxotesarigirer.pdfIn PDF document text
  • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/g9qklatl9i05i23l6ujkoc29b1/sutivixuw.pdfIn PDF document text
  • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/7a218e7ebd2f5e98f166c39e136ad48b/18540228811.pdfIn PDF document text
  • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/f0d86e60874b80480a789797035ab93c/gejavikeza.pdfIn PDF document text
  • https://bajrahrs.com/userfiles/file/79622214739.pdfIn PDF document text
  • https://www.la-providence-ehpad.fr/ckfinder/userfiles/files/90450698751.pdfIn PDF document text
  • http://3e-recycling.ru/app/webroot/filesfiles/lunopepado.pdfIn PDF document text
  • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0afe9fd70---pumawipopimobujazetituje.pdfIn PDF document text
  • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16098dba9cf856---67283963642.pdfIn PDF document text
  • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610bc7dfa9b55---lilakuzuz.pdfIn PDF document text
  • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/21a58445e375a42514cf4078c8fe7d84/noxuw.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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