Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9289689e32a05f8…

MALICIOUS

PDF

48.4 KB Created: 2021-08-11 19:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 48734bd206f115f173d536e75fefe824 SHA-1: dae8b63328ef74a5b01aae40c8639ee031ad8fd2 SHA-256: d9289689e32a05f8455641713588a2f7101aa9633e5e3002d4465ef3ab4239a5
154 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as malicious, including ClamAV detection as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other domains, likely intended to lure users into phishing scams or malware downloads. The presence of multiple distinct hosts and UTM parameters suggests a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9162

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://coretry.ru/uplcv?utm_term=cumulative+review+chapters+1-4+answers PDF link annotation
    • https://toskov-yordanov.com/userfiles/file/24653374807.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/02d839f5ba783fd468d6eaddb0a9f570/xinepejoxim.pdfIn PDF document text
    • https://baoyi-chuck.com/ckfinder/userfiles/files/94948085838.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9a5e962fa6---44200797927.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/2d7b4fd25c4ead8015565c69a3e92f3e/73766010463.pdfIn PDF document text
    • http://stellar.ru/ckfinder/userfiles/files/babedumekasinowasufaweke.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160725bad06a35---venemusobutosafapodoje.pdfIn PDF document text
    • http://media-production.net/admin/ckfinder/userfiles/files/59079828289.pdfIn PDF document text
    • http://glotecgh.com/upload/editor/file/83279981688.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f120188b76---95017130977.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d57230eaac---55769985170.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/181257123102.pdfIn PDF document text
    • http://chiengthai.com/file_media/file_image/file/1640690542.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160cdd714d8f04---1069920176.pdfIn PDF document text
    • http://topas.lt/userfiles/file/tezutewajaxap.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/d46gq54bb86bfpbbril5bhnpv5/kabuwiburesujas.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aea1761c077---kolakituxoti.pdfIn PDF document text
    • http://alohatoypoodles.com/clients/1/11/1122824db0f83c9e74cf39311881f217/File/48296329342.pdfIn PDF document text
    • http://portakalweb.net/home/portakal/public_html/ckfinder/userfiles/files/70755722365.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d81cf221c6---86814633427.pdfIn PDF document text
    • https://girl0229960192.com/upload/users/files/54844862443.pdfIn PDF document text
    • https://przyklejki.pl/userfiles/28738522039.pdfIn PDF document text
    • https://taiwancy.com/app/webroot/userfiles/files/92960866286.pdfIn PDF document text

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