Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e17a4486f987e6c…

MALICIOUS

PDF

79.9 KB Created: 2021-07-29 19:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: bf7918948c4cf30c6b7fdc8cbafa5840 SHA-1: df1a82d9fc5de7ec051f89e288ebc89eaf1c0b82 SHA-256: 2e17a4486f987e6c8f1f33e2c04addd60c5274a1eaa904867727e748171e3da6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, indicating a link farm designed to distribute malicious content or phish users. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification also flagged it as malicious. The file's purpose is to lure users to these external sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8273

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://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/3decbe8a79c8ad7e5857f04486cda418/995397297.pdf In PDF document text
    • http://bkdesign.ee/userfiles/file/97249019134.pdfIn PDF document text
    • https://chp-travel.ir/data/file/97443216392.pdfIn PDF document text
    • http://ecovn.vn/uploads/news_file/metavululolitolemapinexe.pdfIn PDF document text
    • http://self119.net/upload/userfiles/2021/06/files/210606131336.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f39b163caf---64911154132.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/2ba7e14bc3112590e9009ffc29a7a566/wudutuwafuwujuxekodavira.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/b6ibhtjrg0r26e044nc66bsjak/pilomotabixu.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/bejeborab.pdfIn PDF document text
    • http://www.greddy.com/admin/common/ckfinder/userfiles/File/xojupusirigajin.pdfIn PDF document text
    • http://lapawan15.com/shop/fck_file/file/lirubasujuradazanumosatob.pdfIn PDF document text
    • http://opusincertum.it/userfiles/files/95523888603.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/4htk4o70903nnvajrgkhdogri6/dakedibubizugavag.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608c53c6d5290---dikaniramabutorex.pdfIn PDF document text
    • https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/563dbabf8dfd98b8d4d28b2be99dcc52/88468304201.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/tgqmqfs1rq3r8rsm8vbb6g8a8s/lasigogazitezipabojiliki.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/8689a32999d1d302b7fb35d45f10dc96/99166154672.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/ff93viq05o8e1go2jnsjhvn664/mufuzikeleratulufuzetup.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160aad592a189d---99117208330.pdfIn PDF document text
    • http://randalljroutson.com/clients/44711/File/guwuzalakukuba.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d96c6930a6---4463999502.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a2a6bbc8d---71861545665.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/aovlv7tjbbk6tqm3jrho5fjitp/xijuk.pdfIn PDF document text
    • http://spreewaldatelier.de/img/editor/file/nonatumonefasanufazekikid.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=novena+a+la+preciosa+sangre+de+cristo+dia+7PDF link annotation
    • 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_off00010b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B02 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1