Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0869b088bc9504…

MALICIOUS

PDF

36.6 KB Created: 2021-06-05 03:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c170bf79edc6818f61a74ecb6f651749 SHA-1: 89471e7bf438b71ab3e35330ba1fb0c93dea4e8b SHA-256: 0d0869b088bc95045833264fa1dca5b1712e2f5d0bbf80cbdc8d815992dab116
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious by ClamAV and ML classifiers, and heuristics indicate it's an image-based lure. It contains multiple links pointing to compromised WordPress upload directories, suggesting it's used to host malicious files or redirect to phishing sites. The primary URL, https://philabc.ru/uplcv, is likely part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6071

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 36 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://philabc.ru/uplcv?utm_term=how+to+use+grabovoi+numbers+to+manifest PDF link annotation
    • http://bearings-home.com/userfiles/file/varugubufinidotu.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/ju65ilr1ra0qgkba67pe0e3ln6/fazud.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/704v6g01oeedk6qutiepplh9m0/22007784091.pdfIn PDF document text
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/23e2105377b010023ba9d063a687d557/90053885144.pdfIn PDF document text

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