Malicious PDF — malware analysis report

Static analysis result for SHA-256 387e4807b6282b10…

MALICIOUS

PDF

37.2 KB Created: 2021-05-30 09:26:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: b17960909f5e7650dd073a62b9b27f7a SHA-1: 9c4b0ab71d81a348863684545dfbbfd326be76ee SHA-256: 387e4807b6282b10fe1030c21325f6802ed8d8c1279461f62656aae8fb9952f7
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. It contains a single image designed to trick the user into clicking a link, which points to a compromised WordPress upload directory. The document's structure and embedded URLs suggest it is part of a campaign to deliver further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5974

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
  • 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 37 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.
  • 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://oniceh.ru/uplcv?utm_term=introductory+econometrics+a+modern+approach+6th+edition+by+jeffrey+m.+wooldridge PDF link annotation
    • http://softwarefactory.nl/images/file/vevawutodevupadazenewibas.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fvvpq1g88q54tkr46qaj1d04h3/gemovexatemuzabegowogi.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/maluzujutijof.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/3432265111f7006531aee47a91f4fab4/gegivawomuw.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/dc23b28c16d817b6a3a0be3b0595fa83/42964535946.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16097aebf90822---tedevivesoremagurubu.pdfIn PDF document text

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