Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad82bc36bd582bc4…

MALICIOUS

PDF

55.2 KB Created: 2021-08-30 14:36:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 92c2811c0bf9b1720478d737624e90a2 SHA-1: a49e497ee04a339ee3b0ef0efa3c4b71c51dce59 SHA-256: ad82bc36bd582bc4caf8a1ad791d2f22d3c42581df2592e49ece095e465654e4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document was flagged by ClamAV as a phishing trojan and ML classifier. It contains a link farm with numerous URLs pointing to compromised WordPress sites, suggesting an attempt to distribute malicious content or phish users. The presence of external URIs and link farm heuristics indicates a likely intent to redirect users to malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

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://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/286bf4ff5eaaae7f0e4c453c8ef91c3e/sebikiwar.pdf In PDF document text
    • http://rford67613.com/clients/a/a2/a20594cba7d6fe247bc87ef9b80620db/File/pupowilisebixuwozavej.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e7714a0bd8---80749749841.pdfIn PDF document text
    • https://harom.ro/files/file/89593928538.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/ed2948fa0a73cf5c5f42bd57edc8a5a4/46304354282.pdfIn PDF document text
    • http://teormech.ru/teormech/usrimg/file/nadefikiluvinizus.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/f1aaf4e5b74655a8d49b48e1e84008fb/kowosivelusowupubuz.pdfIn PDF document text
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/uupeklf43hiih1djh5p36invc6/66416608721.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b505851e92---41551722175.pdfIn PDF document text
    • http://skazka76.ru/pic/userfile/lusakigejataronab.pdfIn PDF document text
    • http://bangdientunhk.com/upload/files/wimifoxuguzuvoxazabusebi.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3943cc1a16---reserijozaf.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/486fde85cfcfa1249c9ba19fae82b7d6/bisipujutodixenupe.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/32d67f13efbb550305b26a9f4fbc4ce4/84526232575.pdfIn PDF document text
    • http://montoaneli.com/ckfinder/files/rebufitifu.pdfIn PDF document text
    • http://fsoa.cn/userfiles/file/voxotagorejugilebadefi.pdfIn PDF document text
    • http://wwm-quanta.com/upload/files/91461150511.pdfIn PDF document text
    • http://tiramisu-o.com/yamituki-n/uploads/files/guwiwijinuvejasoba.pdfIn PDF document text
    • http://mhinflatable.com/upload/file/18720886092.pdfIn PDF document text
    • https://aksukartela.com/images_upload/files/xomezozasobuvovus.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/69936147874.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/busexa.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/34e702e0d3e4950d1d9ab1f901d6fd4e/ravekekawi.pdfIn PDF document text
    • https://mayersoffice.com/userfiles/file/davibira.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=trivia+bible+quiz+questions+and+answersPDF link annotation

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