Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba36341458294bc…

MALICIOUS

PDF

63.7 KB Created: 2021-06-29 02:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4e949467dd86c5f2541e381f2902d03d SHA-1: 1dc8216ee69a4f30c5c1d1a50579801f741ba6f6 SHA-256: 5ba36341458294bc11ff6898f2e0e42a532f57c8625ec8ad48ac8d7834bfe770
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories. The ClamAV heuristic identifies it as a phishing trojan. The file's structure and URL distribution suggest it's designed to lure users to malicious sites, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c407f72b0a---mupimif.pdf In PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/cpkvmrdlsbtrv7ei9q6valltgn/zotisuwofo.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095e73543309---vagesedileninu.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16078e32fc0d3b---japativatodogifo.pdfIn PDF document text
    • http://hoanggiaphatland.com/uploads/image/files/lovepokunev.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/a0ea3130732e1b0abc4e6194ff0f5dfa/65258278380.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/664cd9fc191f17035e73d2cd5773cbdb/31769768304.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/ohkqlc3vr15o3foqqjmls6jcp5/9035421050.pdfIn PDF document text
    • https://stollerco.com/testingsites/advantage_aviation/assets/media/file/jitawumapupoketobabutade.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/39298415295.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a10b5818072---26712614148.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/3519af023ff1e6f87898a3639f7cf7ae/44128190989.pdfIn PDF document text
    • http://chickendaylacrescenta.com/uploads/files/zikefofewugesa.pdfIn PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/ed5516d7a175b8b4867b74aafd552be5/73612424350.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/70971536984.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/ln09nqtkb4anoh3ui0ookj8pf5/53745821615.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c2de6b6d0c3---43601781551.pdfIn PDF document text
    • https://butterfly-propertymanagement.com/userfiles/file/simewevup.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b21f50979eb---soxaxuzosuga.pdfIn PDF document text
    • https://businessservicesuk.com/userfiles/file/59397890392.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/cc9feb929929ebed89a9a210a7436722/83765876327.pdfIn PDF document text
    • http://hysansam.com/fckeditor/userfiles/image/77834992655.pdfIn PDF document text
    • http://kleiberit.ru/files/file/fopipaduziwesotixukofija.pdfIn PDF document text
    • http://griswoldremgmt.com/uploads/files/bulopudubi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=change+file+format+from+pdf+to+jpgPDF link annotation

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