Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bfadf1ad82bbb7c…

MALICIOUS

PDF

62.0 KB Created: 2021-09-02 08:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 4e320b8df93022c4d4f31664048f4930 SHA-1: c8333cc695f87e59d511f5c670cab52caa555fdd SHA-256: 0bfadf1ad82bbb7c7cb36c52ab98fb119a5dc8e031f09b326294de7635f665ac
124 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV. Heuristics indicate it functions as a link farm, pointing to multiple compromised CMS upload locations. These links are likely used to host malicious content or redirect users to phishing sites, aiming to deceive them into downloading further malware or revealing sensitive information.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3863

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://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa15f06c4e8---ruxofujuwetuzikepoxof.pdf In PDF document text
    • http://armanetti.com/images/risegoxirafuboponume.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/28152128735.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607f858025a85---13040361476.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160cc08d3b6c46---10148347097.pdfIn PDF document text
    • http://euroteam.vn/ckfinder/userfiles//files/boduwu.pdfIn PDF document text
    • http://www.coverseg.com/uploads/ckfinder/files/12563956495.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///pines.pdfIn PDF document text
    • https://istocdukkan.com/userfiles/files/32737039431.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f656b7008a---43012700340.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/16083048263116---nagedabalusudonosojogab.pdfIn PDF document text
    • http://eco-building.cz/UserFiles/File/47073073074.pdfIn PDF document text
    • http://cisseo.net/userfiles/files/7712126901.pdfIn PDF document text
    • http://dijladentalcenter-qa.com/userfiles/file/zegobosarafeparedux.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/8nk1nsl6se51oboncidkm7916u/74391757765.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/vuneluwutonuxenetisu.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/efb8f3d163c77d3ffb0d5ceac01ce6a6/27266331138.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc246368da---nawajifaxolesalifatug.pdfIn PDF document text
    • http://sergey-yushkov.com/pict/file/nidegifawigedifunokepaj.pdfIn PDF document text
    • http://studioaeditecne.it/userfiles/file/bijakof.pdfIn PDF document text
    • http://xn----9sbbnbtte4cyg.xn--p1ai/ckfinder/userfiles/files/pujosawiwu.pdfIn PDF document text
    • https://aspirans.com/files/file/pudajorekotinuluxu.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b424138c54d---zejarasimiwalabemub.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/h4ijhupa5g2plbp73vk6qjdgq4/41347756347.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/hh1pqdqfitc97g075j6rpncvsp/87276585092.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=guided+reading+activity+7+2+answersPDF link annotation

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