Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c18390a37e00cde…

MALICIOUS

PDF

145.8 KB Created: 2021-07-16 17:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 88877b1c1a71d1e4f4f8f9aabd31a15e SHA-1: eb14b0e78a3738fc32507c0e105450f1a0b43e19 SHA-256: 5c18390a37e00cdea14a3cad2abf532d0f003719f817e5ee51e7027ebba238ca
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that contains a link farm pointing to numerous PDF files hosted on compromised websites. The ClamAV detection indicates it is a phishing trojan. The presence of external URIs and link farms suggests an attempt to direct users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3312

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://motelandratecuci.ro/userfiles/file/94653148543.pdf In PDF document text
    • https://addsfly.com/userfiles/file/716555843.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/kroir4g6n2stgl805aceva1jv1/79819378653.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160884049eaa24---3081629385.pdfIn PDF document text
    • http://hilltop1976.com/clients/24685/File/89614100007.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/32cef362147ca956e77c3629c3368182/pobenagabofupuzopogorabe.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089ff6bb6dc5---miguraranewukixedudi.pdfIn PDF document text
    • http://edgecs.net/documents/20961276873.pdfIn PDF document text
    • http://gz-theoutfit.com/UploadFiles/FCKeditor/20210626085310.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160975ef19dfca---lelaseralunutekumefebinez.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/a598a6360871adba5bd7227d8b28f16f/labiji.pdfIn PDF document text
    • http://logisticsnetworks.net/ckfinder/userfiles/files/85584798654.pdfIn PDF document text
    • https://tonere.shop/app/webroot/files/userfiles/files/98411571009.pdfIn PDF document text
    • https://kar360.com/resimler/files/tizuxevoxuwinufosonom.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/cd043b25d3e2733d400ee1c355fa6f04/gisivipuruzotepifiz.pdfIn PDF document text
    • https://cakenepal.com/userfiles/file/jekomusimirarenedawunopix.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7cdd551e3---vuxixinogetav.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160f0f74e809a6---15780867972.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609415355b727---7173221237.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/506d9540fd5cd373872d2806d7b7f8b0/pebigejoluwesivazokafa.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160aa6dde35166---77035817526.pdfIn PDF document text
    • https://naoshima-habitant.com/venerovamilok.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/o5oconc80t0dno9f7f6noaf20d/43192967433.pdfIn PDF document text
    • http://maskaevlawyer.ru/userfiles/file/rudixesuzezomijobutija.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080694d14754---dovimubiwalubawe.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/ac867705826faa70c37a3654759a38b8/61806063667.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/vc4vtatr3hoijtj5hlet0n8qkd/suzejuwafijap.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=30+days+to+more+powerful+vocabulary+pdf+free+downloadPDF link annotation

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