Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5f4a6aaefb1b60…

MALICIOUS

PDF

66.5 KB Created: 2021-07-02 03:37:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 2196ac0718c9815d1867acabb107805a SHA-1: 79472df28bd5c912eb837ee4fda639533e7ef2fe SHA-256: 7b5f4a6aaefb1b6058d8e3a5b62b0347273b630144c9d2d5f7e435ee6a518660
64 Risk Score

Malware Insights

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

The PDF document contains a large number of links, many of which point to compromised WordPress upload directories. These links are likely intended to direct users to external sites for SEO manipulation or to host further malicious content. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest a coordinated effort to distribute traffic and potentially mask malicious activity.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3845

Heuristics 4

  • 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 http://kurskodkb.ru/page_edit/_samples/userfiles/files/86524858990.pdf In PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/2udtoudjh93nv9opttuf5peha5/73179414537.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16080a56b61181---tametegilidobuveneliviwi.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c227b7bc748---80000593960.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dedca03cbc---mawufake.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae16d13435---taminoredavosigo.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a19b618554---8105476806.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/a82e570cd4fa1aedbf2be6609e837dbc/zufobesijazofakonak.pdfIn PDF document text
    • http://gewoongroen.eu/app/webroot/files/userfiles/files/64732862532.pdfIn PDF document text
    • http://vitalbafitnessclub.eu/userfiles/files/44898346742.pdfIn PDF document text
    • https://synersys.fr/contenu/file/58694894169.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/45932fb30c45cb9f819b486a0fd3c48d/sinigenivud.pdfIn PDF document text
    • https://rdsdealers.com/ckfinder/userfiles/files/ranefiketagamaj.pdfIn PDF document text
    • http://didaconcept.com/admin/fckeditor/file/tuxokitejanun.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160862d9304917---vifudo.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/jonk7jjh4i5ak2vnaftt1ihn8c/52440210594.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160823f6c9b41e---gemodixijiziketazosu.pdfIn PDF document text
    • http://wawa757.com/uploads/files/4734999489.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/a92e1602e3b453b65e3a54195c3468fc/35037065932.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd7a0e8d29---fedeseretupakir.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/bb9bff1a985910570e7903f783078c1c/nemofevinejolaj.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/wekuvawogeb.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b29edd995aa---matokibefad.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9d15dcc9a---rolopuxarofibinafezubene.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/9hprh7deahssjciniuu0t09972/66962864636.pdfIn PDF document text
    • http://sevoir.hu/uploads/file/93740398475.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=top+5+richest+man+in+the+world+2020PDF link annotation

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