Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ce3fb94d1ee69f…

MALICIOUS

PDF

50.4 KB Created: 2021-07-20 08:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 67dd7ff6390f9abbc064ea49e0e18263 SHA-1: 2ee0d3c301a8264e484d398fb0c5d494c46a4875 SHA-256: c9ce3fb94d1ee69fdb9d358d47097c186e6b0b08cb6500e7d9dc4fb5b53e71a2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links pointing to websites hosted on compromised CMS platforms, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7685

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://cyuanmei.com/userfiles/file/fomeza.pdf In PDF document text
    • https://xn--nmqu14inmf.com/upload/files/58571060361.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/8fa0112717e3e69b94ef4cf95f1f3d22/19023669397.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0b74c6ea0---49039567027.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/sjl1icqn5g1tmojpvk6knsvh86/14973401144.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/tqt0lr3s3tiuuntqo3c0goq9c3/64971719709.pdfIn PDF document text
    • http://poltinka.ru/userfiles/file/tikagitutobovato.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc258f176b---kexudufavarulefurewer.pdfIn PDF document text
    • https://dudikom.pl/userfiles/file/52277312769.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc2c48c586---siwilatezitimajetol.pdfIn PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/61482996317.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b49404643c9---17303409071.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c5f271cf7---nejujozuruveparir.pdfIn PDF document text
    • http://moestuinwebshop.nl/userfiles/file/begoxagoxinaduvinotan.pdfIn PDF document text
    • https://infotechloyalty.com/bot/ckfinder/uf/files/muvudebawewitovaf.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092ac172349a---28653750106.pdfIn PDF document text
    • http://campfirewtx.org/userfiles/file/vopora.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c299a4b727---11501109648.pdfIn PDF document text
    • http://footstepfloor.com/upfiles/files/bowekag.pdfIn PDF document text
    • http://writtenmail.com/upload_images/file/8311162700.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da2a88da5d4---96994843808.pdfIn PDF document text
    • http://hubbardfamilycircle.com/clients/62940/File/jozuvibogapomedad.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/69d50d590e3e1261e73c4215ff7f48fd/xajadotipo.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609a308f718b6---746095447.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aa1a1c766f3---16203182772.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079849827c96---22245655576.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=proofreading+charges+per+wordPDF link annotation

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