Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3a11db51036c97…

MALICIOUS

PDF

65.0 KB Created: 2021-07-04 08:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: cbcd27ca0c19378e2264ac134bf65fcc SHA-1: 209dc3fdf4f28ba9c6ab78f127759601923246ea SHA-256: 0c3a11db51036c97aecdd38f1ae494d67256a347db8632a6d6b206678759bc61
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress installations. These links likely lead to phishing pages or further malware downloads, serving as a lure to trick users into clicking on malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6844

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://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/c34fb2854a785c798df5e4979ab9bda6/zagaxerapebimipun.pdf In PDF document text
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/1mkj8ul7uvcl70vofee2r4mc42/21253300731.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/34noihft3u5u0pantcsqr13dfb/91268526527.pdfIn PDF document text
    • https://xo-sound.ru/userfiles/file/gufezopenevixaje.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16085b388811a0---bigubuxojevazopuwe.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/q7eqvbd2f7s27qu3ba43sl5l1n/wunanirotazizuxifasofuriw.pdfIn PDF document text
    • https://stiff.pl/ckfinder/userfiles/files/daveminifi.pdfIn PDF document text
    • http://bagumul.com/file_upload/spaw_upload/file/20210507141141.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/c0900dde8946ed9f305bc5f418f58063/88315981697.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073ab96da1c6---revowapubuxed.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608474caa32fe---68440049733.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b306e852c---bojuru.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acea04462d5---jixixujudazipitoje.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce2e30615ad---89151770081.pdfIn PDF document text
    • http://timebank.ru/sites/default/files/photos/pagefile/gasakivulirat.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/fc9bd9360a121ac5a758a8bf7c55090e/72980492521.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160c8acdb52568---75976784742.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/69006104546.pdfIn PDF document text
    • http://bioident.pl/photos_fck/file/juwuzulire.pdfIn PDF document text
    • http://scheiden-maassluis.nl/uploads//file/18423123211.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/c53c110e316447cb7c7086cb082f5646/53713319773.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/rafafazipiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=definition+for+astonishmentPDF link annotation

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