Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ee343dd2dd3050…

MALICIOUS

PDF

51.2 KB Created: 2021-07-16 22:07:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: fce5f4398b6c24be0817203063c40e48 SHA-1: f6ef5297adadba522326bb5dbfdceabb08b2ca12 SHA-256: f2ee343dd2dd30507a4082a9dc1640b2ca87713eb1391227d1eb3b6f53dc8ae0
94 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. The ML classifier also flagged the PDF as malicious. The primary attack pattern involves luring users to potentially malicious websites via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6227

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://bouveau-consulting.com/userfiles/file/67991555537.pdf In PDF document text
    • http://csc010.com/userfiles/file/20210625172658_oimbmf.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/sididibaxipajozoninuj.pdfIn PDF document text
    • http://griswoldremgmt.com/uploads/files/19910917243.pdfIn PDF document text
    • http://colleges-in-tamilnadu.com/FCKeditor/userfiles/file/38930651669.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c532b37f467---32782649582.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/d1biqp4jivh9b7nplnp82kprf6/74618836370.pdfIn PDF document text
    • http://gazosilikatnn.ru/uploads/files/60727720899.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/03237d3104b7fd216ae16c4f86a28682/99795543482.pdfIn PDF document text
    • http://balassalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/66378470648.pdfIn PDF document text
    • http://kochamsushi.pl/UserFiles/file/6749008751.pdfIn PDF document text
    • http://ajivikafinance.com/userfiles/file/jomikajovozate.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/78b0e9693e43a392a1fdf98b29723986/mosarasemopofiz.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16079b5910c5b6---tiwekuj.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/6f512f3ef3d9de2b770239c71f7eabe1/ruzitakusezikibamelox.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609d4fbb732dd---wibik.pdfIn PDF document text
    • http://stjconsulting.it/userfiles/files/5593543795.pdfIn PDF document text
    • http://edgewood1962.com/clients/2/2b/2b25cacec04995aba37d275b9c35b4d1/File/38741143381.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/43aa3972b84914688f58a9fcaf750909/buxinudigawisefebanof.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608043931968b---koluma.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/6fe7cd22e0f5390d67b762bf9aa858bf/koluzetowatoxobukojigo.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/90638217276.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=i+will+chair+the+meetingPDF link annotation
    • http://crossfit28.com.s125853.gridserver.com/siteuploads/editorimg/file/23440232687.pdfIn PDF document text

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