Malicious PDF — malware analysis report

Static analysis result for SHA-256 302f518b0c0142c6…

MALICIOUS

PDF

48.4 KB Created: 2021-07-19 07:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 123ee8f8775b5106fa24cbeb0b6d4740 SHA-1: 6c4c8f79da49523ce98144f62349f2ebfbee4c87 SHA-256: 302f518b0c0142c655512b5320f810f9a8bf607437b1eff42c0e283138ef3d44
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised CMS uploads and disposable hosting domains, suggesting a link farm designed to distribute malicious content or phish users. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics strongly supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7378

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://supermarketdv.ru/files/file/fabaxewuk.pdf In PDF document text
    • https://aulacvn.com/upload/fck/file/pisojavaxezilitumenufez.pdfIn PDF document text
    • https://chpcentre.com/files/file/22226677364.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/54561fae4414677088d5de3d05d1e2d8/35065188249.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/9em40uf26p98mg1ajdvsum9ggb/sulejujijujigikajesoferi.pdfIn PDF document text
    • http://jcbcharpentebois.com/ressource/site-image/files/70262686506.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16082cc7f3a8bd---nanevawavalimiv.pdfIn PDF document text
    • http://apexibd.com/uploads/fck_uploads/file/sebaz.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/63514c8c94a394002b6314d578121137/joximatizavefukosoro.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fefb3e74ed---tazefokilepinujurojizit.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608500316bf7a---jogekojiwisinud.pdfIn PDF document text
    • http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/52946996301.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edf8a15df63---45879232935.pdfIn PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/jakedimulaxijosakov.pdfIn PDF document text
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/85b7f7b76c53a600e452783a7a2d95b3/vewefakugesusimax.pdfIn PDF document text
    • http://splogservice.ru/content/file/6278258613.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/82729249412.pdfIn PDF document text
    • https://fanaf.com/article_ressources/file/zesovijuwojebowisax.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5d2cce8b30---6174729919.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160723943ebb7a---2621420221.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbf1ed55d8---jomimekem.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609457e40eedc---19441654232.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/rogapilifotavedevamusi.pdfIn PDF document text
    • http://hkalc.com/userfiles/reduzejalixamab.pdfIn PDF document text
    • http://epoxidice.ro/mm/file/54318453936.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=an+introduction+to+scientific+research+methods+in+geographyPDF link annotation