Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb41b2550a4ddebb…

MALICIOUS

PDF

44.2 KB Created: 2021-07-09 00:09:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7364248a3346f108c594cb2a2868c372 SHA-1: 23611ed66d6a1266d50990dcc9eeb534ba8c6df3 SHA-256: eb41b2550a4ddebb46a5a6aa90f9b9d794374661a6483fe2b8133ce9db9ea5be
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution lure. The heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links are designed to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7407

Heuristics 5

  • 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.
  • 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://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ae917042954---94261193146.pdf In PDF document text
    • http://bearings-home.com/userfiles/file/28465321936.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c319a8d390---fabagabalirumex.pdfIn PDF document text
    • http://haozuowenwang.com/imagefiles/file/99664590235.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16091dc267ba38---vukasajedinibibojage.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/72g16lai1uglpiisd9uu48lih6/kewotiv.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc5017613e---ruxewarupegabekozajipo.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/rstuaq1k8vieedjg09s4obo2qn/jisolufowitevusavaz.pdfIn PDF document text
    • https://supermagnum-bg.com/userfiles/file/velebijoz.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/a863f51b816a41fb4dee39760ed73440/fuvovaxatenijopimejatajer.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/j81mnhd14pjebmse1tk4nj5g47/wosipukavoti.pdfIn PDF document text
    • http://hurtglass.pl/upload/file/85370458103.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/31208662701.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077d0325abb9---84546056954.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160961b4358b5a---67305852009.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085fcdca81fd---5149334652.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160caed7aa773d---58702622865.pdfIn PDF document text
    • http://katyababash.com/images/uploads/file/22275789683.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/88af3293693bdfe9dab9d0d33cd9bec2/31729254825.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160abd42fc9cf5---13146715892.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ad487b34246---vafavuliwekowepivume.pdfIn PDF document text
    • http://babamoleskine.com/files/file/nakodu.pdfIn PDF document text
    • http://93564497.com/userfiles/pafixelokonax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=is+bamboo+vascular+or+nonvascularPDF link annotation

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