Malicious PDF — malware analysis report

Static analysis result for SHA-256 f65750235932fa11…

MALICIOUS

PDF

70.3 KB Created: 2021-09-19 00:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0023cd8c0d6fbef1c5add0faa83e1311 SHA-1: 3f808a480f86169e318a36d6e0947f6e4ea6c7b1 SHA-256: f65750235932fa11cb9f059d4598ef9537dc3ba12cfc7a1b46c17bf377cacb3c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable or low-reputation domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with spearphishing attachments used to lure victims to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8434

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
  • 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://philabc.ru/uplcv?utm_term=new+offline+games PDF link annotation
    • http://onlineticketreview.com/images/file/juriwubupalel.pdfIn PDF document text
    • https://peoplehelppeople.net/uploads/File/51744332624.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/3019983516.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/sojiwususilebex.pdfIn PDF document text
    • http://odessawa.com/userfiles/file/pefobilolireliwerunufokop.pdfIn PDF document text
    • http://guoyangmoju.com/userfiles/files/gexazox.pdfIn PDF document text
    • https://istanajpdua.com/contents/files/63998457865.pdfIn PDF document text
    • http://www.mmd.ntou.edu.tw/ckfinder/userfiles/files/87345199478.pdfIn PDF document text
    • http://csc0532.com/userfiles/file/20210909082115_vxfk5l.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/9e447f98849c06688c758a936508e90b/46855745577.pdfIn PDF document text
    • http://ginzaoakland.com/uploads/files/juzaboxexabibidageweju.pdfIn PDF document text
    • http://sieuthihatgiong.vn/webroot/img/files/25018150448.pdfIn PDF document text
    • http://parbatsamajjapan.com/img/files/files/xaxasowar.pdfIn PDF document text
    • http://4x4autok.hu/userfiles/files/pobopidujisogemomeluretog.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1614449b125420---zenutezimuwiguwadasifopud.pdfIn PDF document text
    • http://yizhu580.com/ckfinder/userfiles/files/fujuzepinugivubekezus.pdfIn PDF document text
    • https://northcoteplaza.com/userfiles/file/nuzegobin.pdfIn PDF document text
    • http://urparitet.ru/admin/ckfinder/userfiles/files/vobozepogenenolulofopuw.pdfIn PDF document text
    • http://kayapalinakliyat.com/file/68934325911.pdfIn PDF document text
    • http://sinoorchids.com/image/file/fedasudetoredov.pdfIn PDF document text
    • http://goksirlambinowice.pl/img/upload/files/korowukikexuwiwururod.pdfIn PDF document text
    • http://bsbcarpet.com/userfiles/file/fesitalamogudopa.pdfIn PDF document text
    • http://p-energo.ru/content/file/57341034031.pdfIn PDF document text
    • http://eyela.kr/uploadfile/fckeditor/file/jerawagefiwitivux.pdfIn PDF document text
    • https://jerseyshorepirates.com/userfiles/files/17856692747.pdfIn PDF document text
    • http://cjcounsel.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/72820767790.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f38d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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