Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c9eb8622eb94f2b…

MALICIOUS

PDF

70.9 KB Created: 2021-08-10 08:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: bd97dbc0ccb55c218cf536c200428aff SHA-1: 923bfac528682c9a5a47e118a127fd2dc10b5827 SHA-256: 0c9eb8622eb94f2bcec847243b9da91bc63b8e0e3a8509139c22ac9246fbcf65
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to compromised or disposable hosting domains, indicating a link farm designed to distribute malicious content or phish users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The ML classifier also flagged this PDF with a high probability of being malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8495

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://hoshitorionline.com/uploads/files/rabek.pdf In PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1e490ec05---85386063170.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f36c22543---56743104295.pdfIn PDF document text
    • https://szekszardportal.hu/userfiles/file/33103113988.pdfIn PDF document text
    • http://webinaris.biz/ckfinder/userfiles/publics/files/mowezarulo.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/72249674ce8f4ef07b8cd8cf59e51103/45768742569.pdfIn PDF document text
    • http://giasuthanhdat.vn/Images_upload/files/pomesupilokewegami.pdfIn PDF document text
    • https://htlexpress.com/ckfinder/userfiles/files/69165154836.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/gokafa.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/b5ejj21uo2v8jprrhcft2gdh86/65441560324.pdfIn PDF document text
    • http://celiapopememorial.com/clients/4/45/45605e685ba8a3b32f56966823665796/File/pojuresitowa.pdfIn PDF document text
    • http://akgikorea.com/file_upload/fck_upfile/file/8790372036.pdfIn PDF document text
    • http://platypusspot.org/uploads/ckfinder/userfiles/files/lefokimuxabem.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d0ea03843---vefufazebedajag.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b605c40d741---lanafofujovisogud.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/c7fa3eded382e3aee438864a0c49a727/25621503650.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608da25eb72e2---52852560832.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///56092638588.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/4454eb4bf1731cf225f6294e1e444ecf/xixejiselenalibilus.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e63c5baaf---73768475586.pdfIn PDF document text
    • https://x-software.cz/data/file/61911740887.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160819a59a2194---21004505813.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/b16e15dad9176f82068fb3e8350b5c7a/totebazubewopuginaru.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/4e0f907a7da599353917a3e179f602a4/26690712520.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/1f65e7c60e1eb79a8cd0e725f9010492/wubumofekupajugenefanu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=operaciones+combinadas+con+numeros+naturales+fracciones+y+decimales+ejercicios+resueltosPDF link annotation
    • https://lapdonline.org/file/tobifipuwitezolotolamele.pdfIn PDF document text

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