Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea450e78fd0f14d…

MALICIOUS

PDF

64.0 KB Created: 2021-08-03 16:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 94c4b15d0179644c9a60a525c808173f SHA-1: 26367965e31340df60f7b33d7daa19181e7c4137 SHA-256: 6ea450e78fd0f14d0a71772673ddb2e3d6a8318034655f0b1ef3fadd420703ad
154 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV specifically identifying it as a phishing trojan. The file contains numerous links to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links indicates an attempt to exploit users by directing them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9560

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://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/3g6o8lt8ddt3636j0nm7dtl63k/72902587993.pdf
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/0719346bc4653abd524b31da8242d880/7213114635.pdf
    • http://mosvag.ru/img/lib/file/pavufejefamibuduxis.pdf
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6d5ba153e---miritetewolafo.pdf
    • http://finproekt-msk.ru/userfiles/file/dutevevapale.pdf
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/2fb55d5f04eb93542a5f93d8759c65d3/67399545650.pdf
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/504253f56a4f910224cb310e42d9ded4/95457183869.pdf
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/b5ae534a7eb24f35d6bbe060c437695d/dewiruzipimilimenez.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/68f5ae22e249ec882e033948f1ba296e/dogidodidafuvimi.pdf
    • http://klasykarozrywki.pl/public/images/fck/file/nevojuvebewaputuxenivap.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc8510cc0c---kiwafogefawubirakaxutubas.pdf
    • http://eluvial.com/sites/all/sites/eluvial.com/files/zapeketebupilukazijewux.pdf
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/564156c84a0f7fe7b439cecf94eaaee2/xulonazumoleda.pdf
    • https://cortopolis.ar/userfiles/file/92139089571.pdf
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/i2khm5prnakh8q6t9u7a1r5s0r/1189635602.pdf
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2533f782dd---49065665225.pdf
    • http://llux.vn/uploads/files/jivixox.pdf
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/8c5a5aa4c7753b122682c376ce0f0f18/jinixomuzedu.pdf
    • http://cl-pub.com/files/files/1110120444.pdf
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5196b9dee---66231873136.pdf
    • http://conflictfreeelectronics.com/ourprojects/chowki/UserFiles/renuka/file/17202511723.pdf
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/4248ac384375c1a9cf3e5a1bc7b63b4d/90480451699.pdf
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/1adfea864680a603184df2ea3e92de90/99141097047.pdf
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160755cfd2edc0---rukojuseginujaf.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=maths+olympiad+question+paper+for+class+9

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