Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0fdf188cc55b71…

MALICIOUS

PDF

64.2 KB Created: 2021-08-10 09:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: ad4805cbaf616912cfc3fc0c1b5bcfc1 SHA-1: 5188135e69d9320685ed4bb1af6ec46d5efbd061 SHA-256: ac0fdf188cc55b715f686960d1aff2ea2d4c117ede252c7bae43cdcda764a7da
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and disposable hosting, likely to redirect users to malicious content or further infection stages. The presence of external URIs and link farm heuristics strongly suggests an attempt to lure users to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9560

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://cructi.ru/uplcv?utm_term=new+cg+song+dj+remix+2019+download+mp4 PDF link annotation
    • http://matraholding.hu/images/userfiles/files/bolazuroxutazovezodolazav.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16075bea75f82d---52640841367.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c81b653bef---zovamideviwasujirinalu.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160717df823c52---jepafobififimewapivuvasa.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16089a010e0213---wefavokepivagozenora.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/lagoreguzuzinivamegava.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/8b8ac2dff30342eb937dd1167a9c89c2/losoweparuravej.pdfIn PDF document text
    • http://rld-carbon.ru/file/36833428286.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/d2e4c3f8a2ce380a5416a7aff9c922c1/565018810.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f12d8008ff---jaritomotubadeb.pdfIn PDF document text
    • https://bandotrading.it/uploads/file/73404953028.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701677ca357---jonozepis.pdfIn PDF document text
    • http://lamachine.nl/userfiles/file/52242181192.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/vvat41mj3ue1nai5vj9t6bbhnp/30945263810.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d2808a98e0---56151502954.pdfIn PDF document text
    • http://clearspace-design.com/CKEdit/upload/files/zekizuvedapo.pdfIn PDF document text
    • http://anipetkingdom.com/webroot/img/files/mefijuboxoxujizulodu.pdfIn PDF document text
    • http://ewhamd.net/upFiles/ckeditor/files/94366387590.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d09d803d7f---48581259217.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a387c9cf5bb---63119334085.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/3dd54cda4af1dd7f85884ca056222f7f/mijuguzatasevileteto.pdfIn PDF document text
    • https://menu2uplus.com/images/file/88415744951.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085cdce8d9f4---loxuwugotokizadejasij.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072e428f0a92---nuzefu.pdfIn PDF document text

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