Malicious PDF — malware analysis report

Static analysis result for SHA-256 16483cbd7aa67834…

MALICIOUS

PDF

62.7 KB Created: 2021-05-29 19:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 547a90329943158cd8200c90b595446b SHA-1: a6e472aadd23292e1106f4856a425c2092b47e7d SHA-256: 16483cbd7aa67834e15f6d96bc18379f973826471afc6b21909c2e2b8c4f7d9c
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. The presence of external URIs and links to IP addresses indicates an attempt to lead the user to potentially harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7632

Heuristics 5

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077fcdb127f5---zefobojifupagafi.pdf
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840bc080251---lumevuvolazu.pdf
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/cb0b1513f76935d68a331c6110a99e8d/68670498611.pdf
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed295a1d34---vuxoxawezivubofef.pdf
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/323243528319db586daaa7d73ffd93e3/64386843185.pdf
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/97673047825.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/fd6540d4abad85db2bd7dc13e1971782/bunupumalekixudipifag.pdf
    • http://paillasse.hu/userfiles/file/70435494170.pdf
    • http://stroisvias.ru/userfiles/file/34662122118.pdf
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/rd3kea5ga5a3joec3ja7rmbuq6/gijej.pdf
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f82745b535---52285871348.pdf
    • https://www.ideaklinikankara.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac801aac91---goxobata.pdf
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/3018603810.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609626a13b729---tadexorilasaz.pdf
    • http://sooclose.eu/upload/File/19832523949.pdf
    • http://bjaimama.com/data/upload/2021/05/file/202105231624055291.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=what+are+the+7+philosophies+of+education

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