Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc4f1167a0172f40…

MALICIOUS

PDF

62.3 KB Created: 2021-07-01 17:04:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: f9beb60401d034865a727c8debab54ec SHA-1: 91d14cccb21b4bddc4a0cf1fe7b042cbafd10c73 SHA-256: fc4f1167a0172f40b5c0f09098a357d771fd35f61f81dba3cf006658d480aac8
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, with several heuristics indicating it functions as a link farm. One heuristic specifically flags links pointing to compromised CMS upload storage, suggesting a tactic to host malicious files. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely to lure users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3485

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 http://azizolace.cz/images/file/zomiji.pdf In PDF document text
    • http://herium.net/FileData/ckfinder/files/20210701_950F7F0017440825.pdfIn PDF document text
    • http://santeh.md/img/files/38342233158.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c54a7272956---wesudewefefifanefonaloz.pdfIn PDF document text
    • http://from.ua/upload/articles/2021/06/21/files/61047925095.pdfIn PDF document text
    • https://beaszemin.com/files/35902983525.pdfIn PDF document text
    • http://contentworks.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606e58202f40b---giriwifuwuk.pdfIn PDF document text
    • http://fernandopelosini.it/userfiles/files/97518778392.pdfIn PDF document text
    • http://smeclassof1987reunion.com/clients/37165/File/gawemidaxekubotuga.pdfIn PDF document text
    • http://graciaindoutama.com/kingkong/userfiles/files/20161360996.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/boxuzonovidovifado.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/fuvolozab.pdfIn PDF document text
    • https://rpitrade.com/ckfinder/userfiles/files/6018646800.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/3j763acevgvlifo3ntevdg2g31/kogumagezegalokigawedus.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1d46cc57d94de26037d57d155719df67/41658298867.pdfIn PDF document text
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/vevofkdnmbgeohas0gv32lqr8l/nedafasasadivasosi.pdfIn PDF document text
    • http://coffee33.ru/archive/file/fizetu.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082dd7aac596---76149617091.pdfIn PDF document text
    • https://areicon.com/images/file/vumeroposumezozowiduwatig.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/16078b05d6326d---13438496174.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a48a92ad1bc---bulekolevix.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/nubasalitezusabage.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab5d965a8c---dufetunufotavodaf.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/eb47p39m6d5oodc2ot4mp9ib7m/vasadidejigof.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/6052426022.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd4d661231---motisebosatat.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=the+holy+spirit+and+you+pastor+chris+pdfPDF link annotation

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