Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b4927a1a3dc597…

MALICIOUS

PDF

97.1 KB Created: 2021-07-19 18:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: e07bfd2cbb13805447bd912018ead3bc SHA-1: 05bef2d6d051cc87c6fd68e682ec2de944f226c8 SHA-256: e3b4927a1a3dc597a04bc4b9be36ff8b69dfa791329b9eaf2c58b019746e4fb0
124 Risk Score

Malware Insights

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

The PDF file contains a large number of links pointing to external websites, many of which are hosted on compromised or disposable domains. This structure is characteristic of a link farm designed to distribute phishing content or malware. ClamAV also detected this file as Pdf.Phishing.Trojan, further supporting its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3521

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 http://kondicionery-krasnogorsk.ru/upload_picture/file/fivagikudijukud.pdf In PDF document text
    • http://badaranquehablar.com/userfiles/files/dafonojezokofetazakoje.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16091af7820d8d---rozoxutoxatosoge.pdfIn PDF document text
    • http://trendybiz.in/usersfiles/file/kawururomufedaliza.pdfIn PDF document text
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/ad5f10fd2c8f80b6eef2bb348180b839/44822754873.pdfIn PDF document text
    • http://dribblebar.pl/userfiles/file/34648362099.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160941daeefeea---98108193520.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0a55a1d96---fijonan.pdfIn PDF document text
    • http://playfromhome.org/clients/4/49/49939bf6a151252ba1adfe53d1befa29/File/kulabizorevoxuwuvazuk.pdfIn PDF document text
    • http://maility.pl_adresuserfiles/file/winusizak.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a33b0c53255---mobonaxefudosovabozure.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/77655460529.pdfIn PDF document text
    • https://clubslotalmatriche.com/calcas/file/89875075882.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/a1eaf0ab7040ee98a713753e9743aa57/11906340217.pdfIn PDF document text
    • http://slstudio.it/userfiles/files/zulimizolewebikusaloxoxe.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/rikizemogujolixededijafur.pdfIn PDF document text
    • https://banderlogclub.ru/Files/file/romiferibulov.pdfIn PDF document text
    • https://sogelec-eng.com/files/ckfinder/files/40169830970.pdfIn PDF document text
    • http://minutemen-jrotc.com/clients/84940/File/67747424779.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/3fd90e9299fc32c413ce3aa482f25b65/41853756620.pdfIn PDF document text
    • http://guowangcable.com/d/files/telasupagabefakixu.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a064709b60b---4005997786.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/36983b2372db3514f9e0bc5ddbf49b69/mogunewir.pdfIn PDF document text
    • https://m-astar.com/UserFiles/files/fobolosadimiloxokur.pdfIn PDF document text
    • http://kiszelyugyvediiroda.hu/docs/file/numomijula.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160cfd68290980---zakanijizojutuvunedos.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=the+crowd+was+or+werePDF link annotation

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