Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c0210908509267b…

MALICIOUS

PDF

56.7 KB Created: 2021-07-31 15:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d775c0393488ca3e03410c64c34b75d3 SHA-1: 23e97d5ff088a93cdfddb11fa350e605eb50436a SHA-256: 3c0210908509267b3587dac6297e5dd520061cf3b688b255d94c0bdcf5ed9d1c
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress upload directories and other disposable hosting sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to phishing or malware-hosting pages. No scripts were extracted, but the structure and URL patterns are consistent with a malicious document dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7367

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://hosvagyok.hu/userfiles/file/wewibibi.pdf In PDF document text
    • http://www.olivier-frey.ch/user/web/file/guvubijowawogibome.pdfIn PDF document text
    • https://onlinendttraining.net/files/firodijixizuzin.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba8414caf6---duwigifinogexol.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b55d99970df---bepoxalipolexazik.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/c39bf1d9004f0a090c7127213e53eede/87975521048.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/673b5cb5b406203ee0d5a5096aa379bc/kazosiburejexilobepolonu.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160852e86c7ca6---lajam.pdfIn PDF document text
    • http://winso.tw/userfiles/file/33155451659.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/fa53f48fdeddaf3c86257a30d65d2ebf/mefanogez.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/160824565b55fb---mozijufifogojawuseme.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/60656918217.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16104570dda349---84605537616.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/86260151125.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16078297054fc3---79374151186.pdfIn PDF document text
    • http://stardentalcare.org/userfiles/file/73188080464.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/55b206156aa9195bf75b5d22964f80a6/83711447618.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/nholg28b8alom439m5gb2kq80i/34973908681.pdfIn PDF document text
    • https://ajur.rest/uploads/userfiles/file/rebukazinazabapepunofanat.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/tipukukorotijuvo.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/edodgtkshhn75onv5chi2jv15u/vilasepekigenewufekig.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/87744384865.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=redimir+c%C3%B3digos+para+brawlhalla+ps4PDF link annotation

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