Malicious PDF — malware analysis report

Static analysis result for SHA-256 97f32a530d438850…

MALICIOUS

PDF

60.1 KB Created: 2021-09-02 14:13:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: aa39ef079f150f3922c36c54707c30a2 SHA-1: d7a329c90cee8b3d4ae2d6b235b3deb0ede2ed42 SHA-256: 97f32a530d43885022c5339549da2de2a44a7691e11c5c99394baa2588569537
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites for credential harvesting or further payload delivery. No scripts were extracted, but the structure and URL patterns are consistent with phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8774

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 https://catamma.ru/uplcv?utm_term=anatomy+of+flowering+plants+class+11+mcq+pdf PDF link annotation
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/q5dfm0q7anct4l2kubn9h3ehgr/77177476385.pdfIn PDF document text
    • http://memsports.com.br/admin/libs/ckeditor/ckfinder/files/46798532877.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/a107u2h2l4ikdimtgigv7ckjmo/51167713288.pdfIn PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/s5ldmj8er9gp0cuftumfpvcdck/pofovijuzaxixegi.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b5f972a511c---11025121151.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/33854789081.pdfIn PDF document text
    • http://dancingstarsgreenwich.net/clients/1/10/10f73e4104fe6082999c9b722aa65ba2/File/xazunujanusivononovasut.pdfIn PDF document text
    • http://ks-system.co.uk/ckfinder/userfiles/files/6399589647.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/9b6a9bca637e89a460055863f930101f/juzaju.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a762d907c9e---roriwizip.pdfIn PDF document text
    • http://autoachtercamper.nl/userfiles/file/magilonil.pdfIn PDF document text
    • http://podlahypilat.cz/admin/file/jepedew.pdfIn PDF document text
    • https://almuhja.com/ckfinder/userfiles/files/55657193465.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/3ebaacedd1aa6fc292d4148ef1ade5ab/32252705894.pdfIn PDF document text
    • https://alev.az/userfiles/file/54121472714.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a36905ee340---83197428886.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/eae39554722d3a30ffd785e6df8fae77/dutalezezavodadavozun.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/xijedupazep.pdfIn PDF document text
    • https://fereshtegan.net/basefile/fereshtegannet/files/42169734763.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160969bfc03103---56633227780.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093cf585faa4---47823071817.pdfIn PDF document text
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/1608a884b9d2c6---zubaduwivikelivitita.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/9c354b5303eb80c1f7924061d81f9a97/30319063219.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e831a33044---35637643672.pdfIn PDF document text
    • http://balletpanov.com/uploads/files/26964329965.pdfIn PDF document text

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