Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6b5d21286972082…

MALICIOUS

PDF

77.6 KB Created: 2021-09-22 17:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f7a595faa50caf7c5b3d6e4bc4ebacac SHA-1: dc170f3031d5f4c72ec3a05f54bf094cac6beea8 SHA-256: c6b5d21286972082f5eb10cb40e405845cab533909377723b58b12dabab73467
154 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. It contains a link farm pointing to multiple compromised CMS upload directories, suggesting an attempt to host malicious content or redirect users to phishing sites. The presence of numerous unknown URLs further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6792

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 http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/80a1a6854c9a0ff864a9b959c7f3758b/90342652600.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16139215b055ca---dixax.pdf
    • http://smeeing.com/userfiles/files/bitopigagelizi.pdf
    • https://castel.ro/userfiles/file/bokefibixebexa.pdf
    • http://solmoda.it/userfiles/files/wurumizelixomuvatuf.pdf
    • https://szekszardportal.hu/userfiles/file/biwobalajajufibewurekogo.pdf
    • http://avvocatogiuliani.it/userfiles/files/wupurinu.pdf
    • http://investin-khj.ir/ckfinder/userfiles/files/14946372262.pdf
    • https://vanvoorst.info/uploaded/file/98888414866.pdf
    • http://www.northern-japan.com/image/upload/File/kojoxanavujuf.pdf
    • http://www.srijonihealinghome.com/fckimages/file/69305594117.pdf
    • http://3colorjazz.com/fckeditor/userfiles/image/8741728844.pdf
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/894104256134550f64e90.pdf
    • http://candemdientu.com/Images_upload/files/36826254503.pdf
    • http://abw10thstreetne.com/uploads/files/nupoduvazukobib.pdf
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/0j8p6cjdrl559b6r13m8qvgags/libop.pdf
    • https://soroptimist.be/oldsite/intranet/ckeditor/ckfinder/userfiles/images/files/50319541215.pdf
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613260c3ce03f---pepefajusenunekobak.pdf
    • http://iamsong.vn/uploads/files/wadiketenupizofotokobu.pdf
    • http://burragebrothers.net/demo/jolie/beta/userfiles/files/80466067709.pdf
    • https://shopinhome.com/ci/userfiles/files/sumuvadesogokidalexuvo.pdf
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/faa5f349b8a6b383ffca4f4b02550241/74683386012.pdf
    • http://lightningriskassessment.com/ci/userfiles/files/rutizemililijapo.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=free+instagram+followers+without+human+verification+2020

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