Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b26fbfd743e7136…

MALICIOUS

PDF

52.1 KB Created: 2021-07-06 06:50:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: b3af2d1c23310b03d241402afde7cb82 SHA-1: e84a0fa9fd3d431db5820b43918dce21f4da7cf1 SHA-256: 9b26fbfd743e71365e2dea7a788a1e3028254044b729bae469428ed566f4a73a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a link farm pointing to compromised WordPress sites, indicating an attempt to redirect users to malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7261

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/0a16cda438d13789d449fcbf6b11e27a/85300894690.pdf In PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd3a11ea4e8---zuberuvuvujoxules.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/kfq8m9nbp60d46j7o9pj1g6vj4/83853783545.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2dec4f639---vufizow.pdfIn PDF document text
    • http://idolyokocho.com/js/ckfinder/userfiles/files/63088337172.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/1b2d99e842b556d0d8f9d535e4279dfc/24164364256.pdfIn PDF document text
    • https://termokingbt.com/ckfinder/userfiles/files/39806308729.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16093445d3b4d5---gizozobokene.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de620da90d1---sefaviwamosogajuvekakaz.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c0a42cb41a3---golimu.pdfIn PDF document text
    • http://zdrowejaja.com/Upload/file/14670777590.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef6b9d58e2---xovobigiwovedudulage.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/943317226.pdfIn PDF document text
    • http://hosungtour.com/FileData/ckfinder/files/20210602_A3CEE4E1B072CBF1.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/64dad65b7c0eb4862e71c03aaf26d5af/suzozofedebekemirurebuw.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/5c9d07ebe5766cbab352e332e7d876bf/numawosenukuv.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/3c820d74b3e8e68fd37a2a1fc960924d/reviwakazo.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/44ff80e1cbc956f57d81bd684770b15e/43119229697.pdfIn PDF document text
    • https://miet.hu/kepek/83531766226.pdfIn PDF document text
    • http://adveotec.com/img/file/titefofepadekajelalo.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/50694156334.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=rd+supekar+computer+science+12thPDF link annotation

Related samples 8

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