Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0803569d0b4d5c9…

MALICIOUS

PDF

72.0 KB Created: 2021-07-20 11:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 21b03da43bcb257886f59cf43590bd53 SHA-1: 10362482c9335a04dcc1391726f0edd50c34ce8b SHA-256: f0803569d0b4d5c920853a35a73cc88dd191c9248935ccb63b861a74895f4d54
124 Risk Score

Malware Insights

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

The sample was identified as malicious by ClamAV, specifically as a phishing trojan. Static analysis revealed it functions as a link farm, directing users to numerous external URLs hosted on potentially compromised or disposable domains. The primary goal appears to be directing users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4729

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://atenngo.com/admin/sites/site/documents/54267089208.pdf In PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/84154457330.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160775ce784d42---goromikesepejadugi.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160982b5273a6a---nivifodesoluvoni.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/ih67qh1jcrnc1gtclfqg45a403/87184640730.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608c024c78f04---29891220246.pdfIn PDF document text
    • http://whuntex.ru/userfiles/file/92016807302.pdfIn PDF document text
    • http://wahluenfty.com/userfiles/88624435179.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/c498b14bf69bac60f31d11548f08484c/zepozobowubo.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/toeqjbcg3sn61i9h1s763rb6e2/depefekufo.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/44759181792.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/buve8543vjsij0b8g9tup30fti/tejikobe.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16076830314e9a---4277600493.pdfIn PDF document text
    • https://shindah.com/images/ckeditor_img/files/97723478801.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/71883537202.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/0d0a802fcdb7b60fb56e4ad7c514dcd8/79366741265.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094b1013a926---38171727017.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e846e742d65---goloxinelejume.pdfIn PDF document text
    • http://bharatandcompany.in/ckfinder/userfiles/files/zudibotatu.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609c4e32f358d---zilojamebetewefewal.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be777bf1d52---ruzonogegonuponudop.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/feec3e5f3c8a20cdb6fc18f8348bbf80/2322050705.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16072cd9017c17---fakawowipuduso.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b300efb951a---lizapufopemodobeluladog.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bd0eae1cb63---48056524230.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=out+of+the+easy+ruta+sepetys+pdfPDF link annotation

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