Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba17bb26eef70319…

MALICIOUS

PDF

54.5 KB Created: 2021-09-21 04:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f87b3a0cd2f2f343011752e8496955e2 SHA-1: 6bad0dce96641910824a71a01ed013cd87a6ee0d SHA-256: ba17bb26eef703193f0cb1261590512b4e6e131aecd6f3f6c9cd5ec4bf3c2807
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised websites or disposable domains, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the nature of the embedded links and the PDF structure align with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6614

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://laborke.ru/uplcv?utm_term=4bhk+house+plan+3d PDF link annotation
    • https://dsverano.com/UserFiles/File/89761282058.pdfIn PDF document text
    • http://diamantina-joaillerie.com/ckfinder/userfiles/files/zajep.pdfIn PDF document text
    • http://studiosaletta.it/userfiles/files/gagusiwudawinomuz.pdfIn PDF document text
    • http://bxbrdh.marketsearching.com/upload/files/89921828284.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144e479982f0---pogiwafujajedufasapoz.pdfIn PDF document text
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.net/ckfinder/userfiles/files/48574872337.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/k3877jhgp2fg3vo7oijntbh466/mepabagerokuxi.pdfIn PDF document text
    • http://bjqyms.com/filespath/files/20210910222857.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614045096615f---volodu.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/16144cc7a82d86---43892391571.pdfIn PDF document text
    • https://x-leather.com/radsportfiles/file/nusivigomugulepivukirik.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/a1fc9806fd488aa2be73abb5e0f075df/dofekasawizat.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/1329ae0744f02d7bc3ea5005a6f0c4e7/lefowuxi.pdfIn PDF document text
    • https://pre-www.bridge-college.com/uploaded/ckeditor/files/sixotetekerutirovere.pdfIn PDF document text
    • https://argumentua.com/i/file/96903790653.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161448f7c36712---katibujuwilelejuzow.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/7bfd5f93c567cbab03e7e0c30731f677/sijuxet.pdfIn PDF document text
    • http://missteenqueenuk.com/userfiles/file/xuropize.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16142939423c35---demegufiderefadud.pdfIn PDF document text
    • https://sevenhillsgroup.net/ckfinder/userfiles/files/xujelepadebazuw.pdfIn PDF document text
    • https://rosewoodcity.org/nbloom/fckuploads/file/govevuvizowulokogo.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/b9od639negebrs1q7bgpl58itf/97972875409.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/d077833c7158072a8d28f702a3fb451a/4012983150.pdfIn PDF document text
    • http://itaxabc.com/userfiles/file/20210916212913_1557090257.pdfIn PDF document text
    • http://fgsconsulta.com.br/ckfinder/uploads/userfiles/files/32270782752.pdfIn PDF document text

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