Malicious PDF — malware analysis report

Static analysis result for SHA-256 689801e8a78d3da6…

MALICIOUS

PDF

126.3 KB Created: 2021-08-13 11:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d5ba92d5a0215a058ae707b427203489 SHA-1: 91ce76c2fd118593f1d4d123f50fca0074c9f669 SHA-256: 689801e8a78d3da6671343cc01963338680d2d4d4ad422457d378c29a252099f
94 Risk Score

Malware Insights

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

The ML classifier strongly indicated maliciousness, supported by heuristics identifying the PDF as a link farm hosted on compromised CMS uploads and disposable domains. The document's purpose appears to be redirecting users to external sites, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution vectors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9413

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://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/pf411i371bkh2044m91cpp9oel/52860871144.pdf
    • http://malopolskiszlakwinny.pl/upload/File/xigupim.pdf
    • http://foto-preiss.at/upload_files/files/zulador.pdf
    • http://atut-biuro.com/uploaded/file/jipiviburinabama.pdf
    • http://noahsmarinesurveyors.ca/userfiles/file/45339433926.pdf
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/49980e1b00ef264ef6e6b97ec426db5d/kepizogafidetapitaboxi.pdf
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/72fa55f2603a49e834809af97c2d2216/litaxapozudap.pdf
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/9bd613323678a78d83d5abbd160bafbb/bebabige.pdf
    • http://pcccmiennam.com/media/ftp/file/lalevuguguvegumoj.pdf
    • http://laiyi-art.com/userfiles/file/11450181750.pdf
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/da0975842e8b6d94e0e651ba4e41eed9/38669233829.pdf
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a1101bbd2---pokavej.pdf
    • http://fsgpj.com/upfolder/e/files/20210813054605.pdf
    • http://przedszkolenisko.pl/userfiles/file/nomawedozogomunevufun.pdf
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/b54a9334f48b448701f24b1e298f5a8e/kejamewogepamebubujejirak.pdf
    • https://congchung7.vn/upload/file/juretogiwiximuwet.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610cfc2f427b6---risarejabajopifaroriferej.pdf
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609badf4612ee---47188512830.pdf
    • http://meble-tk.pl/userfiles/file/3316357418.pdf
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b78c976588a---49874284966.pdf
    • https://anmoul.com/userfiles/file/32397246284.pdf
    • http://lohsclassof70.com/clients/3/31/31ca850ff086a58b81c8700e10a01852/File/dakujijudanareb.pdf
    • http://americasbestmanassas.com/uploads/files/nuxezojexopijudilojo.pdf
    • https://lapalettedesarts.fr/gestion/file/32067469273.pdf
    • http://tamilannuaire.com/var/www/vhosts/vps296430.ovh.net/tamilannuaire.com/images/file/16218669782.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=good+scenes+in+to+kill+a+mockingbird

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