Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68c140218dd9111…

MALICIOUS

PDF

64.0 KB Created: 2021-06-10 07:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: e8f78894bdc52a4e7063066d0c9a9f7e SHA-1: 2a5693efefecc7787e3e80c743a6de3d1edf7b53 SHA-256: d68c140218dd91111e5b2b12de3e88bf0d9d7a92934d60aab2a2c25fb8129246
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains a link farm pointing to compromised WordPress sites, with one URL specifically mentioning 'gcam redmi note 7 pro', suggesting a lure to attract users interested in smartphone camera software. The presence of embedded URLs and the nature of the link farm suggest the document is designed to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9485

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crewmak.ru/uplcv?utm_term=gcam+redmi+note+7+pro PDF link annotation
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff18b8c4c5---tisibivosa.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/ac79914710b74fc8d65823c6a5a6d451/61577016419.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/amo3o0kk1hnns9tbmpe0863fo0/19944772306.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/nenowufoj.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160968d4502a5e---49691267160.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef8a36719b---9155286684.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/9b79736881de25d6178ee07779108c25/jozabudenusobinaluxuraxi.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/67067290916.pdfIn PDF document text
    • https://maximatrimony.com/ckfinder/userfiles/files/fevasofarupomatisobisoz.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/vb590ltqt00mlavlilrhsm08e1/96149537293.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/9647806d363afd7b3cbf610a263eb36c/55069476064.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/db8d8bcfadf9e101d8be44941c682d6e/5250623616.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/nojewuxuwifanojosep.pdfIn PDF document text
    • http://aj-logistics.com/stock/userfiles/file/tifiriko.pdfIn PDF document text