Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c6e0385a1706a05…

MALICIOUS

PDF

61.3 KB Created: 2021-09-10 23:51:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 40625f7adfe31ef45946546f2643c921 SHA-1: 033c095c732137c4f4bb924ab0872f45f7708af7 SHA-256: 9c6e0385a1706a05e86c8921fd56bac78a28ac663746ffb3f1789dca3db23fe3
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites. Additionally, the document features a link farm pointing to multiple PDF files hosted on various domains, some of which are flagged as compromised CMS uploads. This suggests the file is part of a phishing campaign or a distribution mechanism for further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6290

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://detskeihriska.eu/ckfinder/userfiles/files/86939964522.pdf In PDF document text
    • https://x-leather.com/radsportfiles/file/xezelesolonagifip.pdfIn PDF document text
    • http://eros-arena.name/eros/userfiles/file/fokotikatilefinus.pdfIn PDF document text
    • https://conviviodihera.it/dati/upload/file/78596336085.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/8880de959cb120bbd61bb6a04e503cd9/vevabotenekuvu.pdfIn PDF document text
    • http://markasib.ru/ckfinder/userfiles/files/rujoxuberixob.pdfIn PDF document text
    • http://blccy.com/userfiles/files/97316838323.pdfIn PDF document text
    • https://hgqq.hk/tony/churchofgod/ckfinder/userfiles/files/54456359637.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021091103341214.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f56ae58be6---lemoferikebi.pdfIn PDF document text
    • https://pelicanfinancialnetwork.com/ckfinder/userfiles/files/kejixikanisurolozegax.pdfIn PDF document text
    • http://www.synagoge-stommeln.de/ckfinder/userfiles/files/10779696408.pdfIn PDF document text
    • http://ingmontagna.com/userfiles/files/vixet.pdfIn PDF document text
    • http://seritour.com/rsm/files/jinevizivasuwadapuvoxub.pdfIn PDF document text
    • https://youxsoft.com/uploads/files/vukarazupupagerozupot.pdfIn PDF document text
    • https://luxesystem.site/js/ckfinder/userfiles/files/63540388068.pdfIn PDF document text
    • http://motoren-adachi.com/js/upload/files/22752671983.pdfIn PDF document text
    • https://abctranslink.com/ckfinder/userfiles/files/vuguvunaregulafepalonavag.pdfIn PDF document text
    • https://kaimano.it/file/44236331313.pdfIn PDF document text
    • https://bodegoncriollo.com/userfiles/file/buwuki.pdfIn PDF document text
    • https://mepho.hu/ckfinder/userfiles/files/xetujiribatip.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/9kt91efjm7qq9o9l7s2km1e9kn/35182426958.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=the+complete+zohar+pdf+downloadPDF link annotation

Related samples 8

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