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
• 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 (by orb)). 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.
• 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 http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613650ba32360---dutuduse.pdf In PDF document text

  • https://bishopsalamatkhokhar.org/userfiles/file/64103459694.pdfIn PDF document text
  • https://globaltranslation.com/demo/global_translation/beta/userfiles/files/95872775417.pdfIn PDF document text
  • http://clean-ecology.com/Upload/files/48019430276.pdfIn PDF document text
  • http://centreforeffectivecoaching.com/media/file/98177322494.pdfIn PDF document text
  • http://burattinojatek.hu/userfiles/file/mevuv.pdfIn PDF document text
  • http://aydinservis.com/ckfinder/userfiles/files/9902635479.pdfIn PDF document text
  • http://klick-tipp.info/ckfinder/userfiles/publics/files/bewabikakabasaxolisipo.pdfIn PDF document text
  • http://dar-tom.pl/userfiles/file/76087824772.pdfIn PDF document text
  • http://scandinavia-ex.com/images/blog/file/86161295046.pdfIn PDF document text
  • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/912a527b01b89640a5b2c8aef682a4a0/wikejipitegemofek.pdfIn PDF document text
  • https://cowik.pl/upload/26699310100.pdfIn PDF document text
  • https://detectagsafety.com/ckfinder/userfiles/files/15031104159.pdfIn PDF document text
  • http://myhomeinparis.com/userfiles/files/60829796166.pdfIn PDF document text
  • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/6f4812957cf5ed9c8f79d56f5f062b2f/37166765577.pdfIn PDF document text
  • http://vstarmp.cn/upload/files/20210907_084820.pdfIn PDF document text
  • http://mwflower.com/upimagesfile///popafapizu.pdfIn PDF document text
  • http://old.bgk-meshkova.com/ckeditor/ckfinder/userfiles/files/46613857163.pdfIn PDF document text
  • http://www.alex-vasilkov.ru/images/wisdom/file/1872834443.pdfIn PDF document text
  • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/30asotgkohjsilsqovel7k20oq/wumoravawufo.pdfIn PDF document text
  • https://panama4d.com/contents/files/rewonerejegerobuv.pdfIn PDF document text
  • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/f70150b3825cc11ae0063f5d9716ebdc/gonomawovesiz.pdfIn PDF document text
  • http://vizugy.hu/uploads/files/files/23538248769.pdfIn PDF document text
  • http://stowarzyszeniemalyksiaze.eu/img/upload/files/81583718006.pdfIn PDF document text
  • https://oniceh.ru/uplcv?utm_term=windows+7+loader+by+hazarPDF link annotation
  • 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 extracted file (font_01_sfnt_off0000d95b.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_01_sfnt_off0000d95b.bin)

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