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
• 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.
• 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://krisoc.ru/uplcv?utm_term=decompiling+apk+files PDF link annotation

  • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613decc889fb0---7591504265.pdfIn PDF document text
  • http://studioboscono.it/userfiles/files/63700295865.pdfIn PDF document text
  • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/8eee31f00bac87e0864114e872cbb78b/14947230998.pdfIn PDF document text
  • http://lighthouse-connection.at/myPix/file/bejuwijepo.pdfIn PDF document text
  • http://china-hold.com/UploadFile/file/20210919110656695.pdfIn PDF document text
  • https://www.cifphosteleriayturismo.es/ckfinder/userfiles/files/45009374749.pdfIn PDF document text
  • http://friulanapanini.com/images/file/lobafi.pdfIn PDF document text
  • http://www.dialog-seversk.ru/jsplugins/ckfinder/userfiles/files/gufixojeke.pdfIn PDF document text
  • http://alessandrobelleseveterinario.eu/userfiles/files/xevug.pdfIn PDF document text
  • https://edubox.mn/uploads/users/0/files/53979396733.pdfIn PDF document text
  • http://pn-tech.net/userData/board/file/85645644570.pdfIn PDF document text
  • http://dienlanhlongan.com/upload/files/menipimuxarugug.pdfIn PDF document text
  • http://suarezbeltran.com/aym_images/files/limikapifezafe.pdfIn PDF document text
  • http://jarauwerdaenzn.nl/userfiles/file/97859999035.pdfIn PDF document text
  • https://waxparadise.pl/userfiles/file/kuraxomibesu.pdfIn PDF document text
  • https://najlepsze-w-polsce.pl/uploads/bepowexa.pdfIn PDF document text
  • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/d41b5ee2a7408020d5fc30e1cafec199/kudakuzefa.pdfIn PDF document text
  • http://jnejendomsdrift.dk/userfiles/file/19839655300.pdfIn PDF document text
  • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147c994ac278---dukanu.pdfIn PDF document text
  • http://madonnina.info/userfiles/files/41415092244.pdfIn PDF document text
  • https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/66025130986.pdfIn PDF document text
  • https://ctners.com/ckfinder/userfiles/files/49806324005.pdfIn PDF document text
  • http://kondicionery-dolgoprudny.ru/upload_picture/file/tumod.pdfIn PDF document text
  • https://osikovo.eu/webroot/img/content/files/98351683027.pdfIn PDF document text
  • http://bbfederico2.net/userfiles/file/19310092058.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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