Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• PHP webshell / backdoor source critical WEBSHELL_PHP
  The file contains PHP server-side code with the signature of a webshell/backdoor (named PHP webshell banner (madspot)). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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.
• SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
  PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
• 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://loheb.co.za/XSRYdR1H?utm_term=google+chrome++for+pc PDF link annotation

  • https://rlmahtani.com/userfiles/files/74077110378.pdfIn PDF document text
  • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/0c0ce18b3c94d920cf7a151672fcebec/9400271885.pdfIn PDF document text
  • http://gshosnab.ru/userfiles/file/42731878041.pdfIn PDF document text
  • http://changjiujz.com/uploads/files/202110211504065067.pdfIn PDF document text
  • http://robwalker.net/fckupload/file/bawujefageniwa.pdfIn PDF document text
  • http://chia4kids.ru/ckfinder/userfiles/files/sovakab.pdfIn PDF document text
  • http://eeplt.edu.pe/kcfinder/upload/files/jiwemuvaxoviko.pdfIn PDF document text
  • https://casapenela.cgb.pt/admin/files/files/21177963062.pdfIn PDF document text
  • http://anitacalderon.com/ckfinder/userfiles/files/30366691840.pdfIn PDF document text
  • http://dbexpertise.fr/catalogue_dynamique/file/kopilozawe.pdfIn PDF document text
  • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161b141dbd967c---87995029136.pdfIn PDF document text
  • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/a14473116d8eb2a5cf74fb2f6e1aea60/83056893857.pdfIn PDF document text
  • http://estatepie.com/files/userfiles/file/11824190770.pdfIn PDF document text
  • https://ardiinerkh.mn/uploads/userfiles/files/72684451978.pdfIn PDF document text
  • http://onlinetradeshow.ir/uploads/files/18438673628.pdfIn PDF document text
  • https://www.amis-simserhof.fr/kcfinder/upload/files/96293143080.pdfIn PDF document text
  • http://back2wood.de/userfiles/file/47651767599.pdfIn PDF document text
  • http://www.banzolaassociati.com/gestlab/kcfinder/upload/files/bebobaxudidatiga.pdfIn PDF document text
  • http://labradory.pl/file/1778722076.pdfIn PDF document text
  • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zirovuxesetexukowa.pdfIn PDF document text
  • https://madspot.dk/ckfinder/userfiles/files/wisevomiwovowupenavaj.pdfIn PDF document text
  • http://energyexcess.com/userfiles/file/miledir.pdfIn PDF document text
  • http://ahkjt.com/upfile/file/10653460637.pdfIn PDF document text
  • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1618c2c6770bb3---75800992702.pdfIn PDF document text
  • http://coomargroup.com/ckfinder/userfiles/files/5458785148.pdfIn PDF document text
  • https://tkaniny-svitap.cz/kcfinder/upload/files/lebabejemabaluwixej.pdfIn PDF document text
  • http://rrarental.org/upload/file/linujewapovitidorikodeweb.pdfIn PDF document text
  • http://culbertsonlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/paxeligidadoradizuwetu.pdfIn PDF document text
  • http://vejwun.cz/images/76081567140.pdfIn PDF document text
  • http://megat.pl/uploaded/fck_files/file/jowegibej.pdfIn PDF document text
  • http://www.gamylai.vn/uploads/files/dujobapipuvofubom.pdfIn PDF document text
  • http://worldnaturalfood.com/image/upload/File/xizijuxu.pdfIn PDF document text
  • http://www.2m-france.com/img/uploaded/file/52275638209.pdfIn PDF document text
  • http://pappteam.hu/userfiles/file/75398764576.pdfIn PDF document text
  • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135b12fe3895---48698470481.pdfIn PDF document text
  • https://raghuvirtrading.com/userfiles/file/74645093341.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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