Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b408b36f5be782…

MALICIOUS

PDF

59.5 KB Created: 2021-09-05 18:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: 6409c1d7dc0fd97f4e3f3c3a5c1b13d3 SHA-1: f7881b9c868f37283acdc5bb97200a0c51d33647 SHA-256: 17b408b36f5be7827aa2622260677975433781a546651f9b989732e99d9f9429
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress uploads and disposable hosting, indicating a link farm designed for SEO manipulation or phishing. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the structure and URL patterns suggest an attempt to lure users to external, potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16093f53698db3---xuzosegigotilaxuzasezota.pdf In PDF document text
    • http://pphjako.pl/userfiles/file/belazujugefe.pdfIn PDF document text
    • http://rotang.net/userfiles/file/tubaboneniwidutasakevi.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/16107e234e3aba---15530902435.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611992e774abb---32477216661.pdfIn PDF document text
    • http://cosmosimpex.com/app/webroot/ckfinder/userfiles/files/jasemifajuwiwe.pdfIn PDF document text
    • https://chiataiec.com/userfiles/Proj_Name//files/bomotogamepamesenak.pdfIn PDF document text
    • http://linkingpeople.info/userfiles/file/wodewugifijewutakojikami.pdfIn PDF document text
    • https://tideandtigers.com/ckfinder/userfiles/files/nezobizipidogupeselinare.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/18d27143de3a4bfcf69aefaa55f834c7/botezomilurixavezat.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161200fcf554cd---zanulavolojowiritaga.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/b1aeb93870481b7d231015e1b557323c/dufavonijawujesenizis.pdfIn PDF document text
    • http://antoniolescio.net/userfiles/files/91770254583.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/f07260bb56e968249ae5749d09edcad6/berofelo.pdfIn PDF document text
    • http://wagnerfamilyreunion.com/clients/866685/File/68444644325.pdfIn PDF document text
    • http://china-zub.ru/userfiles/file/29390226235.pdfIn PDF document text
    • https://mkontakt.pl/dat//file/56835533224.pdfIn PDF document text
    • https://bliznacite.com/files/58702330679.pdfIn PDF document text
    • https://akgoz.zemta.com/uploads/files/47325222552.pdfIn PDF document text
    • http://unseenadventure.com/userfiles/file/pevivozurexok.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/wazaperenanebedu.pdfIn PDF document text
    • http://nokianhakkablue.ru/ckfinder/userfiles/files/monifidumeniginubop.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b13bd58dee1---71997328787.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=the+farming+game+rules+pdfPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/939f0403575f10bce9b2701a86d99dc7/vawesanajizisotowewij.pdfIn PDF document text

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