Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64ecd6aaee8b4c0…

MALICIOUS

PDF

63.7 KB Created: 2021-09-05 04:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 8f5695cafb2907324d95c481e731ba52 SHA-1: ee7f1261293ba76895db0d60e4db40f45b618627 SHA-256: f64ecd6aaee8b4c072d794f7b4e7c5934d9b221a55a9d9d59e4e5f139a29187a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and numerous external URIs, many pointing to compromised WordPress installations. The heuristics indicate a link farm designed to redirect users to potentially malicious or phishing sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8034

Heuristics 6

  • 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 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.
  • 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
  • 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://ketchas.ru/uplcv?utm_term=canonical+books+pdf PDF link annotation
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/9bcc7ddba1cc77769a198e6adb86ebfe/7549346194.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/3ec0ff19bfc1d27d8bb25a0280272946/lebexisanofuvumugekuveb.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/71962d196a35159d8c5487167fad2bc1/gevibelidenivutodewiro.pdfIn PDF document text
    • http://www.klccpa.com/userfiles/file/In PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/9f5f9438277374bc72d67255dcffaddd/lufanutapunuketiw.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/j7846j05ki1m3homvfg28kdv32/putagawuberinunava.pdfIn PDF document text
    • https://abouelhoulgroup.com/userfiles/files/32271445019.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607b06fdcb89f---88203093149.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e4d41594e3---povuzalunoferomuv.pdfIn PDF document text
    • http://www.alrafeef.com/faisaliya/js/ckfinder/userfiles/files/xararujalud.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609c50e78667e---pekulit.pdfIn PDF document text
    • http://somsit.com/ckfinder/userfiles/files/69108036759.pdfIn PDF document text
    • https://beytarimcilik.com/admin/editor_resim/file/kuwefupuporejetoxozi.pdfIn PDF document text
    • http://walkofagesvt.org/clients/0/0e/0e42319052772b195a43ba3ede0f03e0/File/fiwarubafamoki.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612e2c1869176---70863629595.pdfIn PDF document text
    • http://longarmacademy.net/fckeditor/userfiles/file/rexopedurufetededuruni.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/c02jeti8p1s1mjkaruhmjv73ru/79693949590.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2273bf8ad---88603874436.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/48816469208.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/as9b90j35gos75sg8gea5ofq8q/tovifivo.pdfIn PDF document text
    • http://0985028898.kad.tw/kads/ckfinder/userfiles/files/382031770.pdfIn PDF document text
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210619155514.pdfIn PDF document text
    • http://hoadon-dientu.net/images/files/gujusomitidogu.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f8483634cf---32381702223.pdfIn PDF document text
    • https://ewt.cz/res/file/bepamixaleziravo.pdfIn PDF document text
    • http://limuzine.md/userfiles/file/25920344986.pdfIn PDF document text
    • http://cwesp.biz/upload/file/28682220910.pdfIn PDF document text
    • https://smartmedia.ro/app/webroot/files/userfiles/files/73021438817.pdfIn PDF document text