Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff67796bf51673a…

MALICIOUS

PDF

54.7 KB Created: 2021-09-07 13:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 0b76b6ba61537e70522459b5035f7a9f SHA-1: e8e2f7107b4b47a1dc3177ba8070382472e3c683 SHA-256: 1ff67796bf51673a2ee0c0889f017ab1295a73904d8c8ba1418b8e558f7bdc1a
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to various websites. Several of these URLs are hosted on compromised CMS uploads or disposable domains, indicating a likely attempt to lure users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3186

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://allytemp.ru/uplcv?utm_term=unseen+poetry+aqa+pdf PDF link annotation
    • https://virtualpulse.eu/UserFiles/file/didizi.pdfIn PDF document text
    • https://xo-sound.ru/userfiles/file/tabidovaxowirev.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b417a1a823e---tuxosasud.pdfIn PDF document text
    • http://jiendurancecoaching.com/ckfinder/userfiles/files/matosovedirijajajajuwo.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160848e828aea5---68382505323.pdfIn PDF document text
    • https://okinawa4d.com/contents/files/27029265886.pdfIn PDF document text
    • http://tieuhocsondong.hoaiduc.edu.vn/ckfinder/userfiles/files/turezikixijejebaxonoto.pdfIn PDF document text
    • https://daynexweb.com/upload/ckfinder/files/joziwunibimatekokaw.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e127a4f118---1103929574.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094ded280f43---44721251329.pdfIn PDF document text
    • http://amy-tsai.com/images_express/userfiles/files/zidosimekorebuwawe.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d92d3073e7---bawomemijite.pdfIn PDF document text
    • http://bonfiremadigan.com/uploads/fckeditor/file/mubosevatasage.pdfIn PDF document text
    • http://radyoislam.com/resimler/files/26934187598.pdfIn PDF document text
    • http://kzlo.pl/fotki/fotki/file/vabujutefelezebawenetomib.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/gjeu1qivhqcrgr8ejmv1585j8f/46286145442.pdfIn PDF document text
    • http://giasuminhtam.com/Images_upload/files/38201069809.pdfIn PDF document text
    • http://sushistoryus.com/uploads/files/nalex.pdfIn PDF document text
    • https://biographiewerkstatt-singer.de/userfiles/file/danukoredenexoxexovomiwad.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086e385a739b---zukapuxuvesivu.pdfIn PDF document text
    • http://landroverbh.com/ckfinder/userfiles/files/23625343314.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b24a3389c47---bibixamupis.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/8cea46d90d66f8df189705de4a5ad412/jofavet.pdfIn PDF document text
    • https://catbasailing.com/upload/fck/file/bagunejuwulaxaluferojilo.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3674e36ad0---91383265451.pdfIn PDF document text
    • http://barrybusiness-crm.com/ressource/devis-photo/files/25990824130.pdfIn PDF document text

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