Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd8c3fb2b8c3c26…

MALICIOUS

PDF

61.3 KB Created: 2021-08-17 21:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a1813f03c351442ededcb1c62095f150 SHA-1: 30063a202445b3855019ddc96ab0cd819a94d6ce SHA-256: 5bd8c3fb2b8c3c26a68b59e32e6859614cafbe63604f46f614d9f2e53b2a729a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious sites, likely as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9371

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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 http://someteme.com/archivos/_20210703084210.pdf In PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c162d034efb---fenox.pdfIn PDF document text
    • http://digivideos.net/ckfinder/userfiles/files/nixopaxawelatojafedoved.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/sh22bbss0aj1m9erfde5mh93og/64786560928.pdfIn PDF document text
    • http://hkalc.com/userfiles/4040829557.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f876dcd6d---jumoride.pdfIn PDF document text
    • http://www.alliance-bio.com/user_data/editor/ckfinder/core/connector/php/upload/files/vidunuxitujimepovagune.pdfIn PDF document text
    • http://www.gieskestukadoors.nl/ckfinder/files/files/98356391976.pdfIn PDF document text
    • https://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/llbd4b9pgtqerq86sudi0fe5vv/21666870481.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/28671843493.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/c1c9540222754b69375878c5545f8ed3/zoresebigu.pdfIn PDF document text
    • http://dailycan.com/userfiles/files/latamatufeva.pdfIn PDF document text
    • http://jhferry.com/data/fckeditor/file///vadorixiginexoxawopew.pdfIn PDF document text
    • http://debden.org/userfiles/file/gimuxinebavobeselomofuvi.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075c5c3651ef---kegoxafukoxavevove.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088577fb0f8b---lixiwagizabageto.pdfIn PDF document text
    • https://cmottaviproductive.it/uploads/file/tobolaxolezujagez.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3e0960f3c4---pubuwalopelularijiz.pdfIn PDF document text
    • https://www.chablis-gautherin.com/ckfinder/userfiles/files/54140298016.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/pogamewidipojejululu.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-6-29/20210629094426999096.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/4l2l6c1mcn673ugf4sm2tvnmn9/kobur.pdfIn PDF document text
    • https://www.temsilcifirsatlari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160821c88cf28f---ravatufafapukidovopek.pdfIn PDF document text
    • http://juha.be/_files/file/xumozofuxulafaj.pdfIn PDF document text
    • http://remobudostol.pl/pliki/nesaxa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=como+cambiar+el+tipo+de+plan+en+netflixPDF link annotation

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