Malicious PDF — malware analysis report

Static analysis result for SHA-256 1810ea6ca2931cb6…

MALICIOUS

PDF

62.4 KB Created: 2021-07-06 20:20:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-23
MD5: f0ebd7a42de80fc1871108996b6b9de4 SHA-1: 35001d0096b1dbaef4b2a62724a9d50bb8a3229b SHA-256: 1810ea6ca2931cb6720439b7fd51b38314d8ed88d72471ca1d57b0321e323979
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4857

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://catamma.ru/uplcv?utm_term=vocabulary+and+grammar+test+unit+8+test+a PDF link annotation
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/2b407659fef514201ced34f3c52edaa1/95482499111.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/72e7422f271e42da0502e48d21b2d987/judekerakimomuparitiwin.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608e79bfd822b---96812780116.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/a7673a2de938a5846582c7e608c7cf9f/99566521176.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/d02edbv8v5eb1gs4lsij7m7u46/8168594796.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f233d86b1d---nejugebirowemolowi.pdfIn PDF document text
    • http://preserveproperties.com/userfiles/files/kufikatixofexoregitajula.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/no8qb8st4f0g3lhs39k10r7j50/89679762525.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d86b2a47f8---47183900705.pdfIn PDF document text
    • http://strategie-online.net/catalogue_dynamique/file/ditekavuguki.pdfIn PDF document text
    • https://cosmeticdermatologymiamibeach.com/uploads/data/files/6449979745.pdfIn PDF document text
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/98615d73fed5d940f9b300d24fdd8706/39434077576.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160af77bab96f4---vemejedabawiguwo.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/f1c7d4a48f02cf030a4226bd1e5f76a5/zumirunas.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/e31a079993eb4b67e95f65e6da5c5096/17669752216.pdfIn PDF document text
    • https://nmcs.ca/userfiles/files/70592457002.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/71e9fb37d3122a213663316473d2a08a/57202719250.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc2b085768---pozubinu.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607ceb2ec8ee7---diboxoju.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/sa5h3g3l2gnbmbte9fq8upi3lp/22999503174.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a16aa993d98---40567416720.pdfIn PDF document text
    • http://www.ppk-kp3k.kkp.go.id/ver2/extra/ckfinder/core/connector/php/media/ckfinder/files/7935765643.pdfIn PDF document text
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160971f3201da3---manusuwoxi.pdfIn PDF document text

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