Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4c023e208c8d19…

MALICIOUS

PDF

54.3 KB Created: 2021-09-17 23:50:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0c841875af9f4595952b74a23dc35ea0 SHA-1: 6cd4187dda373417bfeae0f79a92b8b61dc3e5a2 SHA-256: 7e4c023e208c8d19899903c0ad291952c5513cfe0cdd005b82f9dc422027a129
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains a link farm, with many URLs pointing to compromised WordPress upload storage or disposable hosting. The ClamAV detection indicates it is a phishing trojan. The presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4194

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 https://nomylo.ru/uplcv?utm_term=tiktok+apk+download PDF link annotation
    • https://esperanzadeavila.com/fotos/file/26149536629.pdfIn PDF document text
    • https://flyags.com/editorResources/file///23277102926.pdfIn PDF document text
    • http://hanasushimenifee.com/uploads/files/28023735914.pdfIn PDF document text
    • http://maxgear.cz/webpagebuilder/ckfinder/userfiles/files/55690846237.pdfIn PDF document text
    • https://spcinternational.in/ckfinder/userfiles/files/pojivojazuxanodunogurur.pdfIn PDF document text
    • https://giga-tronics.com/userfiles/files/liwasuxobakori.pdfIn PDF document text
    • http://silver1979.com/upload/file/7723517035.pdfIn PDF document text
    • http://vinabomi.com/uploads/userfiles/file/tomimixa.pdfIn PDF document text
    • http://findmecakes.com/userfiles/files/87991827792.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/nluknisp3nl7svsrvg12fcv4s1/benutixowupuse.pdfIn PDF document text
    • http://salsainkonstanz.de/media/files/95060481343.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161309a450ab58---nenudanemowedaxo.pdfIn PDF document text
    • http://adas-muko.pl/photo/file/jinodaka.pdfIn PDF document text
    • https://karolinanowak.com/userfiles/file/tunuwugutedavidokeju.pdfIn PDF document text
    • http://giprozdraw.ru/ckfinder/userfiles/files/kizixinoledupa.pdfIn PDF document text
    • http://www.huescalamagiaenfotos.com/userfiles/files/fakulikebulikizude.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/40345525009.pdfIn PDF document text
    • https://thegioibaobicarton.com/Images_upload/files/8581619580.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613e4e083e82c---16591562999.pdfIn PDF document text
    • https://tinnituskozpont.hu/files/karekiwovusaro.pdfIn PDF document text
    • http://zamdq.com/filespath/files/20210906215513.pdfIn PDF document text
    • https://inprovitbrasil.com/ckfinder/userfiles/files/pafujopazu.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/4e7cfbc56f070cca6c87ae62e99a8d50/mepoviko.pdfIn PDF document text
    • http://plantessentialoil.com/upload/files/nixumulikekodanuxo.pdfIn PDF document text
    • http://sm300159.agchost.com/userfiles/files/64469572266.pdfIn PDF document text

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