Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea55e7fb36173bb5…

MALICIOUS

PDF

41.4 KB Created: 2021-07-07 07:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 69e079dbb1bd176a2022cbd4efe18697 SHA-1: 9b74a64ff9be211f96ae0d500ee04200ec02d16a SHA-256: ea55e7fb36173bb5dc3662e89f172f9fbfbcff4c960799fd079e2656c5cf25ac
174 Risk Score

Malware Insights

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

The PDF is identified as a phishing lure due to its image-only nature and embedded links pointing to compromised CMS upload directories. The heuristic 'PDF_IMAGE_LURE' indicates a typical phishing shape where a screenshot hides a clickable button. The numerous links to compromised WordPress sites suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7341

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://teenaramainc.org/clients/875997/File/wupumin.pdf In PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16097789220ea7---fezipopagumivogekob.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/11e7jadtpo2fnldv4sg2iq66r8/moxemekupivexotufukeju.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160afe177616d3---kenegobal.pdfIn PDF document text
    • http://www.trafikyaren.com/wp-content/plugins/super-forms/uploads/php/files/d82mq5r54nfa442rp3tm5h69e6/wedoseba.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/vtgbhprihc4rccdahr8l04d9g3/43605126007.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/1pvnrvtuedshbe676efro0le71/29762545820.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/tajujem.pdfIn PDF document text
    • http://banglenhospital.com/UserFiles/File/26723629214.pdfIn PDF document text
    • http://nawooelcs.com/upload/userfiles/2021/07/files/210701160935.pdfIn PDF document text
    • https://dla-pracownika.pl/pliki_user/File/vonozomisulasedebidoxox.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec07fafd5f---mewiropukigeno.pdfIn PDF document text
    • https://stollerco.com/testingsites/advantage_aviation/assets/media/file/13105664405.pdfIn PDF document text
    • https://kanalprofi.at/UserFiles/file/funatoxibuxelokelup.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088179203e2b---7975729363.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bba0f5d3a85---66071903328.pdfIn PDF document text
    • http://buyyoutubelikes.com/ci/userfiles/files/41087490520.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/48d0f762b10bb846505a1d5cbaf60200/wexomaxusatolufiwanibira.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/985de48e59d8a446a1ef83af37ce1345/fowobivafimoz.pdfIn PDF document text
    • http://kino-cosmic.ru/sadm_files/73453581064.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffb8d834a9---veketotasasusuk.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/91301159456.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/ch3m6d65gan7j7qcdpradimd2l/44624184150.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=number+of+alphabets+in+tamilPDF link annotation

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