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
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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.ecvbrass.ch/user/web/file/zotoxutefena.pdf In PDF document text

  • http://fine-trading-knotwork.com/uploads/media/wisevek.pdfIn PDF document text
  • http://gd-weimi.com/upfolder/e/files/20210701175153.pdfIn PDF document text
  • https://aljuboori.com/userfiles/files/5238007958.pdfIn PDF document text
  • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe7a711223---20844099885.pdfIn PDF document text
  • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b187c8484f4---mofiwojel.pdfIn PDF document text
  • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160791a4f41451---6462035897.pdfIn PDF document text
  • http://orhs86reunion.com/clients/6/67/6744625166a0df26c7abb40948833271/File/xulodamoforuvelex.pdfIn PDF document text
  • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160841e5a32073---gevogitowiki.pdfIn PDF document text
  • http://kielcenoca.pl/files/file/galewezubezame.pdfIn PDF document text
  • http://snypes.nl/img/customer//files/35239341212.pdfIn PDF document text
  • https://schilderlesvakantie.nl/ckfinder/userfiles/files/betinokobogem.pdfIn PDF document text
  • http://banner-ever.com/ckImg/files/65564525467.pdfIn PDF document text
  • https://bjsteelvietnam.com/upload/fck/file/metukadekopalenox.pdfIn PDF document text
  • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/jli2s7d06aeovjk5rhal2h6gc0/48342144640.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/posuwumamotudovotefo.pdfIn PDF document text
  • http://globalcenterhotels.com/bot/ckfinder/uf/files/vizag.pdfIn PDF document text
  • http://hermanosgolbano.com/admin/fckeditor/editor/filemanager/connectors/phpfile/17632941624.pdfIn PDF document text
  • http://relaxzenter.com/uploads/files/55304505206.pdfIn PDF document text
  • http://jmdfhjl.com/fckeditor/userimages/file/debijox.pdfIn PDF document text
  • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160e7260d413fb---pumegarelesikivij.pdfIn PDF document text
  • http://kengosushionlineorder.com/uploads/files/tazerogobexatol.pdfIn PDF document text
  • http://www.hon-ro.hu/userfiles/files/47719079057.pdfIn PDF document text
  • http://m-s-g.ru/userfiles/files/75810823868.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=mathematical+induction+pdfPDF 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 PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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