Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce8859b46a30c253…

MALICIOUS

PDF

71.9 KB Created: 2021-06-24 18:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 28f82c2e43b8f5dfb90ef049a64dc7fa SHA-1: fab440ac715077dc31429f8c420cdc3f7df1fcbb SHA-256: ce8859b46a30c2535809ca0f1bf027fcc3f4c6bdb20d9727243aa2e28be22407
94 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document's apparent topic, 'how to spray single stage metallic paint', is likely a lure to disguise its true malicious intent. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7441

Heuristics 4

  • 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://oniceh.ru/uplcv?utm_term=how+to+spray+single+stage+metallic+paint PDF link annotation
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/ibo1476ct6kaahgdp3cmnjhu8n/vakoderakamegarusizoxa.pdfIn PDF document text
    • https://abicecream.ru/ckfinder/userfiles/files/88855986196.pdfIn PDF document text
    • https://kueapem.com/contents//files/1246184681.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a680a956f7a---pedotulezigavexosodisoxe.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/4d1748eebc47b042823270dc8f3ccc10/fowonebodosojuweruzi.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2be96e3afa---firedifixutepuruwabopefaw.pdfIn PDF document text
    • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/raxepu.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d29a9b17a---gadejubaros.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/2dc85c082c47cd9ecae0c766eb158386/50958155579.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/bf57680fb92b82e297d51bcbf4464aff/bokorexodedirodu.pdfIn PDF document text
    • http://componentcnc.hu/uploads/ckfinder/userfiles/files/zunibakerexirenoxi.pdfIn PDF document text
    • https://heritagecambodiatravel.com/userfiles/file/39630624471.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160802a6bc9b2c---75734212173.pdfIn PDF document text
    • http://nedirajtebosnu.net/userfiles/file/24626723680.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/99e39db4f4592ba787fbcdaf2a8c9d8e/kenoxu.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16077d046aa09b---16058913160.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160bd0bb7af515---boguzafebakigeb.pdfIn PDF document text
    • https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/lvgc75vm8gvclfc5e4q5bvm3jp/bumividapizujazagaxufus.pdfIn PDF document text

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