Malicious PDF — malware analysis report

Static analysis result for SHA-256 b316067238da360a…

MALICIOUS

PDF

49.8 KB Created: 2021-06-27 05:37:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c64f0edd4fdf3d41716143aea173145a SHA-1: f062c5447a24f657c7607fe833ccfb27a904abf6 SHA-256: b316067238da360a198d18d41da82c6a24f3dd7f5ec5ed096ecfa2c4ac90b65a
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The file's structure and URL patterns are consistent with malware distribution or phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6843

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://smidgel.ru/uplcv?utm_term=my+baby+love+u+so+much+forever+you+and+i PDF link annotation
    • https://tractorpulling-emmeloord.nl/upload/file/vijivovukebagiti.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb8285990e---rupezabelovelij.pdfIn PDF document text
    • http://china-zzld.com/uploadfile/file///2021062217091946.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/h2cgi99gmqh34mholhuuofkte4/95768859820.pdfIn PDF document text
    • https://actor-conseil.com/files/file/sutufikewenuwidoxebari.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cefe4f480dc---37374463821.pdfIn PDF document text
    • http://brooklynsmokeshops.com/admin/images/file/mexudala.pdfIn PDF document text
    • http://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/75648107032.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e29db33f2e---dubuxudefuxexuwelez.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/kiwotedobozexorodure.pdfIn PDF document text
    • https://travelstore.tn/userfiles/file/rifotofelidus.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/cc2133c3ab8453c0369eb1751d4de1cc/65724690934.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/l4o0gc8rfe6qji5f74raj1gsu6/solesupunapav.pdfIn PDF document text
    • https://bikeid.net/ckfinder/userfiles/files/tuwaxudizavotipo.pdfIn PDF document text
    • http://kaushalacademy.org/ckfinder/userfiles/files/66350052130.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aeb5e3929a5---72202747295.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7224e48d0---sojobojopimune.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/205b5c9cf3638fbbbc9d58e5c8b133d1/86877922124.pdfIn PDF document text
    • http://daebokjungdb.com/uploads/files/gawatokidobaxixetoxoju.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/2a80c3c4e796f5f1105d8d290d8d670f/mefarezowexutugobojegabet.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/d822e43a57734f0aa25694eb377f9d79/69857524867.pdfIn PDF document text

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