Malicious PDF — malware analysis report

Static analysis result for SHA-256 73f93fe54debe532…

MALICIOUS

PDF

40.0 KB Created: 2021-07-16 01:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 36e92be0d15d4603d159bd26a0d1061e SHA-1: 23ffdc5e43646390d7d9864e15fb3d3c4e8eb6fd SHA-256: 73f93fe54debe532f7fd8fad2e00f03d4d339a8bc0a6ef2e85d5dd4615ff4556
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains a single image and minimal text, typical of a screenshot designed to conceal clickable links. The numerous embedded URLs point to various domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting an attempt to distribute malicious content or redirect users to phishing pages. No scripts were extracted, but the overall structure and URL distribution strongly indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8759

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://garglob.ru/uplcv?utm_term=behavioral+questions+with+answers PDF link annotation
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/34955601a320bf2abc2a34599e56901f/jawotofefubovuwevoluxone.pdfIn PDF document text
    • http://texmet.pl/userimages/file/1128934281.pdfIn PDF document text
    • http://best-infosystems.com/userfiles/file/61510531317.pdfIn PDF document text
    • http://dogalakustik.com/depo/sayfaresim/file/99225125136.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/460be47cab378f33d5891c09083836a5/65478778752.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/67376560a16cbb12565207487d78b5c0/xurelimisemexeduxegalil.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/26175479251.pdfIn PDF document text
    • https://martensmgt.com/business_school/uploads/file/xiradeterukesixegoj.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/hh45o4c20pqc8l9qq77k1fihb0/68861751723.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099a01062c25---sixamalatide.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c6b0ef21a41---50297598374.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///21155153415.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfd56e44421---pefapawaritoreg.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/35u8apr5p6fbrmb4kvu72tgc21/rokamoluwe.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160df7e4eacc29---83985951278.pdfIn PDF document text
    • http://autoset66.ru/admin/ckfinder/userfiles/files/momagul.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/v5ndb6q2s0sepj8t8kuq9qg43v/nuxowipujuludes.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608709d173152---38506520705.pdfIn PDF document text
    • http://jointrilogy.com/wIn PDF document text

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