Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c2d8e9a960eecd…

MALICIOUS

PDF

64.3 KB Created: 2021-06-06 23:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 222b746f3c4aaac131ce233765e52edf SHA-1: 415ee85edd32981359098c43329aed87d858f445 SHA-256: d0c2d8e9a960eecd6d78750a4fc7b70186f88694cc54607464e96f90654d02f4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external links, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to technical support or product information, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8608

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://wastran.ru/uplcv?utm_term=how+to+turn+off+bose+soundlink+mini+1
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/suhoht9idq5dn7d93e1i85d725/54476296369.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16094835174e07---66253551636.pdf
    • https://menu2uplus.com/images/file/jivaroxufesoxaxo.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/5159c5b69fda6a85d5d242b9b7901bca/7398078241.pdf
    • http://baigeleather.com/userfiles/file/77436222835.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6b4f0284f---55986688914.pdf
    • https://alihuata.com/userfiles/file/duguwopejobukijele.pdf
    • https://fanaf.comarticle_ressources/file/mesiwitokijuwizelanur.pdf
    • https://dollarplus98.com/images/upload/files/podajupikizujujanetuja.pdf
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607eeb8b47cea---52545932058.pdf
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e7b57746c---61587289837.pdf
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7f4369a91---tifawevu.pdf
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/8f50c78ae875668476e96c83fe8fba5d/jaravevivusuzetoki.pdf
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/ejvs1bj13lqdpvhijrl0ktkmet/28715187948.pdf
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/578778f394c53666ca534ceb75bd5f17/25449801754.pdf
    • https://triosms.com/userfiles/file/10293617493.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2db.bin
089863e1bff4ec2887079baf72f355731b009adb6ef849bdbcc882a5a951e106		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DB 5152 bytes

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