Malicious PDF — malware analysis report

Static analysis result for SHA-256 b92972f06d20fd3e…

MALICIOUS

PDF

63.5 KB Created: 2021-07-18 08:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 512fcbd5429364118794f05b51249130 SHA-1: 56a381757c9d03e5e3a4af21c4f2a4f0d0229ab4 SHA-256: b92972f06d20fd3e79e2356e0ffb65ebc1ecce17a1ae3d824500c7de7d266284
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. The ML classifier also flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5405

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://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/hntu4a72nhm70naact875cmhea/buluriwo.pdf In PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dac3f218eb5---12810327677.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609758bf878e8---digikenijekutiwuwoxugujew.pdfIn PDF document text
    • https://puppometalli.eu/file/68111119288.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609da657dd9ba---lajelux.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/c6ba1aae99b660bdebfbda0dd1ceb873/benubobanonujalupogu.pdfIn PDF document text
    • https://semagro-msw.ru/pics/images/file/86502610757.pdfIn PDF document text
    • http://fsnmmaterials.com/UPFILE/userfiles/files/49943159111.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/51161781860.pdfIn PDF document text
    • https://sambelteri.com/contents//files/dugumokawomexilorilut.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/akj6vvgo3aqg4ubgqth3l3kpbd/forenudaw.pdfIn PDF document text
    • http://beijingxinzhi.com/userfiles/file/20210512172127_1239096289.pdfIn PDF document text
    • http://gleneaglehoa.org/images/file/54402608115.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/489eed3f27269e7691c526bbbe75e9cc/nejaxofotokas.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160751b3a20121---wotapusuferevuko.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e4c6c13a785---tixusonadog.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a14927c88b6---tatip.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/c4fe95cfddc4a5baeae41018fad3648e/dinare.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/unk6om3gh8tpn9l5d65l6gmq0o/59420806503.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/f448e22c96fae1c7d4ca06924c896192/nesupepaz.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4fac39a36---25288775299.pdfIn PDF document text
    • https://zoomkish.com/basefile/zoomkishcom/files/74225432867.pdfIn PDF document text
    • http://aggengr.com/uploads/CMS/file/sejibuxu.pdfIn PDF document text
    • http://ubest.ru/images/file/pojipavojoworuw.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160956151c038c---piwezunixu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=i+was+hoping+to+see+youPDF link annotation

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