Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce958b0cfba9fb18…

MALICIOUS

PDF

41.5 KB Created: 2021-07-02 20:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 5a70c788dec088fca43d768b6039c2ad SHA-1: 0a9eb3732532a87a16ffbc952a6bd9468a0b163f SHA-256: ce958b0cfba9fb189ad63ef1ee40b4651f0607cc894e6156ddee95ced7aac2a6
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains a large number of external links, many hosted on compromised WordPress sites or disposable domains, suggesting an attempt to redirect users to malicious content. The document's structure, being image-heavy with minimal text, aligns with a common tactic to obscure clickable links that likely lead to a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7341

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 41 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://smidgel.ru/uplcv?utm_term=geocentric+theory+definition PDF link annotation
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/6fe49c2e0c1f42e6bd240bc46fb2fe89/vofomekimaf.pdfIn PDF document text
    • http://studiodabo.eu/userfiles/files/duxutopifanuzotawad.pdfIn PDF document text
    • http://myredm.ru/uploads/file/movujenunuruwowobenamafe.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160780da33a1da---83252146008.pdfIn PDF document text
    • http://pogservice.ru/userfiles/file/wolimeketogigekopu.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076d049e8b61---duzepalenuliduzudukage.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/8ab2a7702ebb9fc5a68c11195ecef8d5/puvemuwugu.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/jajixugulibowo.pdfIn PDF document text
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/16079f409d3cf2---86066921165.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083544f4e592---82492248010.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/wevukigawijezosonisuk.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b662ec30d4---27227150812.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/inr8mukqm3jc9iifvcb8htqh3k/58879703178.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608155a5873a2---18328378207.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/de557ed41cb6369ca3058b0ba89c89fc/xupujujex.pdfIn PDF document text
    • https://kp-bs.ru/upload/files/23237137188.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caf2495e47---jonakekaniwitaxubezise.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be0658aff33---14707019686.pdfIn PDF document text
    • http://graylegalservices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sajeda.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160baceb28d6be---79745748858.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/b59260873f04f599a066a9cdf7a8e6b1/vepoxile.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160c953d231846---58218419030.pdfIn PDF document text
    • http://luxe-pools.fr/i/File/retogigotime.pdfIn PDF document text

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