Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb9902bb94d88391…

MALICIOUS

PDF

241.7 KB Created: 2021-07-20 22:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 757a1e009574292836f2831aa8f8fe94 SHA-1: 44a63d561fd079ace27c72fead2ce32f066230a5 SHA-256: fb9902bb94d883915a038433b9990b13592f3b30c39b13386fd485d252efa395
124 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7822

Heuristics 4

  • 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.
  • 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://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a94968c66b---9055235340.pdf In PDF document text
    • http://secretlove.ch/ckfinder/userfiles/files/91504953051.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/424d00e514cbe3879c469732e5ae0066/97021218179.pdfIn PDF document text
    • http://cerezolorente.com/files/cerezolorente/_repo/file/99554084796.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160f6802cef58d---xamavagivikuri.pdfIn PDF document text
    • http://hytechplus.com/userfiles/file/mujalerenesuzozovudarono.pdfIn PDF document text
    • http://dahchen.tw/userfiles/file/34989819524.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5299c2dc5---tabezufuzarimobud.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e6a080c8d---40100329726.pdfIn PDF document text
    • http://woods-china.cn/ci2/userfiles/files/20210617113139.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b43213ec6ad---derorinel.pdfIn PDF document text
    • https://comobrew.com/newsite/images/user_uploads/file/puganupafevifufozefodag.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160961d19343ba---10411277057.pdfIn PDF document text
    • http://gustosandvic.com/ckfinder/userfiles/files/17659392804.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/60f4fd6c01371a18d737e5faba590f5d/74439838472.pdfIn PDF document text
    • https://aaaxxion.info/images/file/maxisu.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0c6e5f0ff---77623778301.pdfIn PDF document text
    • https://aaaxxion.info/images/file/97320896087.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/e73035badd67e828232fe7dc38330c15/66176912606.pdfIn PDF document text
    • https://liffeyartefacts.com/fckimagefile/file/72760894231.pdfIn PDF document text
    • http://johnmichaelharrisonlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xefinexaxunipafofawajo.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16087dc702f783---figazon.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc5c906ec5---nofinidudejo.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071521eb9534---leritezagurijosovinarolux.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/h3lagv0402h6rif12qugpblvv3/62682484907.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=optically+pumped+magnetometerPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003557d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3557D 20820 bytes
SHA-256: 196c441603d6b748e2c046874c7651250bf4524313a807f6ec80adb6819937a7
font_01_sfnt_off00038d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38D33 16108 bytes
SHA-256: 9ea9197b6a75c7fe67a727ea228f5add925cef9a7182c4c37535d81b948c8910
font_02_sfnt_off0003a268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A268 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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