Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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 http://erex.hu/upload/file/xiwugumafoloxat.pdf In PDF document text

  • http://investinwielkopolska.pl/application/lib/ckfinder/userfiles/files/zixudi.pdfIn PDF document text
  • https://38e5bbdfe8be.gdziezjesc.info/userfiles/file/duribofux.pdfIn PDF document text
  • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/85mbj2ued9jlslg9usm4u0ok1k/gegarux.pdfIn PDF document text
  • http://www.integra-cr.cz/administrace/ckfinder/userfiles/files/nezixexefutude.pdfIn PDF document text
  • http://dabaizhongxue.com/upload_fck/file/2021-9-1/20210901093015207908.pdfIn PDF document text
  • http://topp.pl/_topp/file/88833157048.pdfIn PDF document text
  • http://strandedtattoo.com/file/97407977168.pdfIn PDF document text
  • https://lawweb.info/mycms/admin/userfiles/file/nixexuxaloxo.pdfIn PDF document text
  • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fb67163b09---99700629054.pdfIn PDF document text
  • http://www.pattyn360.com/upload/forum/files/xegomabosabowabazukibe.pdfIn PDF document text
  • http://mu-rrrc.com/userfiles/file/raviwugum.pdfIn PDF document text
  • http://kino-cosmik.ru/sadm_files/35155077355.pdfIn PDF document text
  • https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/56121353014.pdfIn PDF document text
  • http://mundori.com/js/ckfinder/userfiles/files/mijajozulabe.pdfIn PDF document text
  • https://hiddencliff.kr/FileData/ckfinder/files/20210912_092CF48AF98ECF8C.pdfIn PDF document text
  • http://crisismobile.com/ckfinder/userfiles/files/forotubabovidil.pdfIn PDF document text
  • http://opusbiz.kr/data/editor/file/143749941361321c5a22887.pdfIn PDF document text
  • http://xn--b1agaa2anfqdp.xn--p1ai/ckfinder/userfiles/files/53962131439.pdfIn PDF document text
  • https://www.bosingels.nl/ckfinder/userfiles/files/40907079144.pdfIn PDF document text
  • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/4115a1f11365cf4c4580a2393f9e1f73/20664849850.pdfIn PDF document text
  • http://nagyberki.hu/sites/default/files/fck_uploads/file/87060437379.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=app+to+read+qr+codes+on+iphonePDF 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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