Malicious PDF — malware analysis report

Static analysis result for SHA-256 deaa2ec7fe6efd11…

MALICIOUS

PDF

38.7 KB Created: 2021-06-13 21:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 7b183fdfd2be366746d1ac137fdec7a2 SHA-1: 8a66caf700f288ed207a47d2d5358e959974d118 SHA-256: deaa2ec7fe6efd117bd05eebd309e5e35b20f556534d93b0473f58d9658a009c
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as a phishing lure, likely intended to trick users into visiting a malicious URL by presenting a screenshot of a search result or application. The document contains numerous links pointing to potentially compromised websites, suggesting a phishing campaign. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7332

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 38 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://archism.ru/uplcv?utm_term=editing+snapseed+background PDF link annotation
    • https://studio-september.com/wp-content/plugins/super-forms/uploads/php/files/35e8c5e304edd918d74fa1b4801c93cf/pafujonosapulifozadovof.pdfIn PDF document text
    • http://easternhoteljeju.com/FileData/ckfinder/files/20210609_A3FF77C791DF83D3.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/bovis.pdfIn PDF document text
    • https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5d1a1eac5---55281092021.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609289d7b5ebf---mubavutopo.pdfIn PDF document text
    • http://gildiamasterov.ru/userfiles/file/foreta.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608c02e1dee24---mabutiludowabujejezapiko.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/96da30691ae085a1e49fb70c588806e5/japepal.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/q1sok5o1lq53snral951dj9vgt/64629884790.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/82543406789.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/dd15bf9d450e2fa61d627130b87ff9ae/xafiwijamomukatiweta.pdfIn PDF document text
    • https://strechybenesov.cz/content/51285389520.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608928547f6f6---sazosuvefifavi.pdfIn PDF document text

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