Malicious PDF — malware analysis report

Heuristics 9

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• MFA / one-time-code harvesting lure high SE_MFA_LURE
  Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
• 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
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130741a6963e---supuvaxiva.pdf In PDF document text

  • https://divinenine.net/userfiles/file/banibiwas.pdfIn PDF document text
  • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/aqpcs2l0in59g43jj415cprjrr/98385787219.pdfIn PDF document text
  • https://diarch.in/WYSIWYGImage/file/toluzovokavokisoguritire.pdfIn PDF document text
  • http://teusz.pl/UserFiles/file/tipivevotukewepupoju.pdfIn PDF document text
  • http://bluebirdcanada.com/FileData/ckfinder/files/20210921_7734907007E2D7C1.pdfIn PDF document text
  • https://standsimulator.com/ckfinder/userfiles/files/kitudazafot.pdfIn PDF document text
  • https://bacsionline.net/userfiles/file/62771547831.pdfIn PDF document text
  • http://kfnmsz.com/upfolder/e/files/20210909110207.pdfIn PDF document text
  • https://presstone.hu/userfiles/file/40132708586.pdfIn PDF document text
  • https://equipelec.fr/ckfinder/userfiles/files/fujubezowodaruwibabe.pdfIn PDF document text
  • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149537e37870---88856725792.pdfIn PDF document text
  • https://takipcisec.com/calisma2/files/uploads/pezoduzidizizutuwokarabox.pdfIn PDF document text
  • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613953840765f---wutuzironivevezigoxuzaza.pdfIn PDF document text
  • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/243f8130b2d7e4e1fb556819ff866e50/94813040229.pdfIn PDF document text
  • http://vevo.keresztessyoptika.hu/elemek/file/79292631599.pdfIn PDF document text
  • http://taiwanquinoafamily.com/shopadmin/upload/files/rexazavinusexorazo.pdfIn PDF document text
  • http://thainightjob.com/ckfinder/userfiles/files/43527137188.pdfIn PDF document text
  • https://bosingels.nl/ckfinder/userfiles/files/44160796682.pdfIn PDF document text
  • http://abbeytraining.net/userfiles/file/57383960444.pdfIn PDF document text
  • http://rjbmachinery.com/d/files/moxuwonisowix.pdfIn PDF document text
  • http://saveursetsavoirs.fr/image/file/3985453356.pdfIn PDF document text
  • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1614000633ca59---vipavituj.pdfIn PDF document text
  • https://hunghiephuylog.com/upload/files/gewumuwofor.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+share+photos+from+iphone+via+bluetoothPDF 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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