Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b95610a867367fe…

MALICIOUS

PDF

70.2 KB Created: 2021-08-20 13:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 63b1b358f07ca9c823b73022cce839f1 SHA-1: bb200af83b4e5c97d6927fb992719b2bba4ee2df SHA-256: 5b95610a867367fe72edd48b68982ea1b524bbd65912a13d9f1c7c1e130c8c51
124 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress sites and other domains. These links likely lead to phishing pages or further malware downloads, leveraging the 'link farm' technique to obscure the ultimate malicious destination.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4816

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://laborke.ru/uplcv?utm_term=how+to+start+learning+guitar+theory PDF link annotation
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/74a405ce2e13a4f2b0d8a06fe32eb094/67558068868.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/49892072026.pdfIn PDF document text
    • http://globeksa.com/ckfinder/userfiles/files/ziginidajisexositetuz.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/160e50a77c95cd---44863292659.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e95374497ed---16764662847.pdfIn PDF document text
    • http://perles-del-beya.com/userfiles/file/51363187847.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f381af800f2---71583067523.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c828ac376---72584577368.pdfIn PDF document text
    • http://varosom.hu/userfiles/files/zojukaj.pdfIn PDF document text
    • https://xo-sound.ru/userfiles/file/wivekudufag.pdfIn PDF document text
    • https://leciv.fr/uploads/FCK_files/file/15969995597.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0a7972d72d---71511069760.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609269e3a87f5---43373085071.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160f006720320f---62759563002.pdfIn PDF document text
    • https://fallsplat.se/file/97317571747.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/nebonadivajab.pdfIn PDF document text
    • http://autofulltravel.com/userfiles/files/62663183900.pdfIn PDF document text
    • http://quick-thailand.com/images/uploads/file/zuduvetusiman.pdfIn PDF document text
    • https://nestsearch.in/admin/uploads/file/ravavonuvemafilonoxuveju.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/pubt6lv9f7itde9trst9593590/nuvujokadumafoginumes.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/71e300794f5aa756dd3f5fa510df6c80/pamudaxabumogu.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b839e6aeb8d---nulilobima.pdfIn PDF document text
    • http://lmyc.net/clients/875386/File/legidugokufodelivava.pdfIn PDF document text
    • https://rsun.pro/admin/ckfinder/userfiles/files/3618408067.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/4a06c2bb55efe2f9dce2dbc5ed578a73/24750739016.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c75ef17839---61172646281.pdfIn PDF document text

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