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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://yoyep.co.za/XSRYdR1H?utm_term=grove+gesture+sensor+datasheet PDF link annotation

  • http://dientrotiendathc.com/media/ftp/file/1320749288.pdfIn PDF document text
  • http://beibarys.com/app/webroot/js/kcfinder/upload/files/84456748209.pdfIn PDF document text
  • http://indemo.pl/Image/files/11387373309.pdfIn PDF document text
  • https://siam-royal-view.ru/data/files/gosexaxosowumol.pdfIn PDF document text
  • http://yuanjiangchem.com/upload/files/35155451832.pdfIn PDF document text
  • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/161221e156ad86---23745668301.pdfIn PDF document text
  • http://www.oomewatersport.nl/upload/files/zoziwunewogitoxegox.pdfIn PDF document text
  • http://dblbtech.com/userfiles/file/nolilokoletutosafipo.pdfIn PDF document text
  • http://przedszkolenisko.pl/userfiles/file/71815253009.pdfIn PDF document text
  • http://mstreatmentadvances.com/userfiles/files/nefepafagumiret.pdfIn PDF document text
  • http://aiaato.com/FileData/ckfinder/files/20210822_8AE825C21177886C.pdfIn PDF document text
  • http://mrpokedb.com/uploads/files/97928081424.pdfIn PDF document text
  • https://madspot.dk/ckfinder/userfiles/files/6678074131.pdfIn PDF document text
  • https://mallncart.com/userfiles/files/subopifinulurebopezava.pdfIn PDF document text
  • http://www.ztc.hekko24.pl/panel/kcfinder/upload/files/17870931663.pdfIn PDF document text
  • http://granite1962.com/clients/869125/File/12547628252.pdfIn PDF document text
  • http://gniortho.com/files/Upload/file/61532531630.pdfIn PDF document text
  • http://xinyuemu.net/assets/202108/files/20210802210108660258.pdfIn PDF document text
  • https://misbahelmudii.org/ckfinder/userfiles/files/25059399840.pdfIn PDF document text
  • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/e72d5f78151393211cf8baeb678830e6/pomedeginosagibolim.pdfIn PDF document text
  • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/unlnid1m45jkrd9570qdv78j46/nozolisopozugujop.pdfIn PDF document text
  • http://klhl.com/userfiles/file/xuxumudapewo.pdfIn PDF document text
  • https://digireg.se/upload/93935122893.pdfIn PDF document text
  • http://namadagaskare.ru/ckfinder/userfiles/files/59210780911.pdfIn PDF document text
  • https://cfbadalona.net/ckdata/files/bekapufuvobit.pdfIn PDF document text
  • http://ilkemymm.com/image/files/gewoxij.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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