Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9c9485477f7bbd…

MALICIOUS

PDF

84.6 KB Created: 2021-08-09 10:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 84720ca2def204d8a6804aecba53a887 SHA-1: 715300312b03574988108d58768d3d2928534d80 SHA-256: 3d9c9485477f7bbdbb9a6c3ad16f4d2b7c16de6762da600e6b205522ba375f48
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The file contains a link farm pointing to numerous websites, many hosted on compromised CMS platforms, suggesting an attempt to distribute phishing content or malware. No scripts were extracted from this sample, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5179

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://archism.ru/uplcv?utm_term=beloved+sparknotes+chapter+9 PDF link annotation
    • https://creativenursery.net/home/creative/public_html/ckfinder/userfiles/files/74439621370.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5164517c1e---bobozulejaregoviwiwot.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7cc2624136---29976493710.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/a36b986524cf4687894b9bc0b21e1709/53225288811.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16082fc510c30b---30675750237.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/28e7e3330b34e4a6c709adbc50ada50c/pidukagurapabavilixigiga.pdfIn PDF document text
    • http://thegreenlegacykeepers.com/clients/e/e8/e8dc17949b7ef813e9937e453902477f/File/22096283037.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/08a1b09f04f11a7805b0ee9b1b82ad0c/japepu.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/la6pgsac5nri1jflb02fuqq7gs/58574573691.pdfIn PDF document text
    • http://www.lugashotel.com/data/editorfile/1530692017.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/677c9aa534abf70733180c877fe2a791/31875522975.pdfIn PDF document text
    • http://cornucopiafrederick.com/uploads/files/49447680178.pdfIn PDF document text
    • http://gt-outillages.fr/ressource/site-image/files/viraxolow.pdfIn PDF document text
    • http://bjeclinic.com/ckfinder/userfiles/files/lazubuwitoviremotifewe.pdfIn PDF document text
    • https://immo-cjeanpaul.lu/userfiles/files/tusisugizejaboxexaki.pdfIn PDF document text
    • http://sgyscom.com/upload_fck/file/2021-6-26/20210626092718408520.pdfIn PDF document text
    • http://lws-realestate.com/userfiles/files/17781296624.pdfIn PDF document text
    • http://thuexedanang247.com/uploads/image/files/garuwovekuxisobimojorez.pdfIn PDF document text
    • http://www.ettermanenterprises.com/ckfinder/userfiles/files/vozepemikenejarutasid.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743bfa3925b---towatemajasewonakozujo.pdfIn PDF document text
    • http://dcbestwings.com/uploads/files/34230023142.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160d6b32dcc946---5902887175.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4c892ac48---wuwifasu.pdfIn PDF document text

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