Malicious PDF — malware analysis report

Static analysis result for SHA-256 010c5463eee20d4b…

MALICIOUS

PDF

61.4 KB Created: 2021-09-04 20:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ca292b2a167faca87d56faf6a68692e4 SHA-1: 8b0132c8c9cc1bd3aef451821dba1107912bf6f4 SHA-256: 010c5463eee20d4b7b6da8771f9c8eaf159b1786f5fd9997faf9606b91d1fad4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised websites, likely to facilitate phishing attacks or distribute further malware. The presence of external URIs and link farm heuristics strongly suggests this document is part of a broader malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5895

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
  • 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://synerhu.ru/uplcv?utm_term=skolnik+radar+handbook+pdf PDF link annotation
    • https://upchealth.net/wp-content/plugins/super-forms/uploads/php/files/c790390786c3a80136b766068a4a1b72/wuzutagiza.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608faa36452b8---94687515854.pdfIn PDF document text
    • http://coutleelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/58173580553.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/k97drjogh9v2r4vbt08tr611i2/linanavo.pdfIn PDF document text
    • https://curewelldiabetes.com/userfiles/file/88444111669.pdfIn PDF document text
    • https://www.weldcor.ca/public/ckfinder/userfiles/files/9967832372.pdfIn PDF document text
    • http://qunjl.com/userfiles/files/xorimolututuferisek.pdfIn PDF document text
    • https://sp-pir.ru/wp-content/plugins/super-forms/uploads/php/files/a9d2d351342ef7dcc9617adc6d6b065d/41917787083.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b077660811a---vitajofokupepetezi.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/gsv70cb0nh93gddklevc7l9dqf/luduzadumafetulureza.pdfIn PDF document text
    • http://daiichihr.com/uploads/news_file/vusexifolesijuzepifebo.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/16086a84375d83---vijezatedepuzufuwapaguf.pdfIn PDF document text
    • http://magicdiscoradio.hu/userfiles/file/50388741600.pdfIn PDF document text
    • https://bibliotheque-des-arts.com/ckfinder/userfiles/files/65340030018.pdfIn PDF document text
    • https://francois-daulte.com/ckfinder/userfiles/files/39475217346.pdfIn PDF document text
    • http://mfahk.com/upload/files/77694576650.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/km1mtd071537rtk1ct2el354e4/dilawufevoxi.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091e51b6e915---91763249765.pdfIn PDF document text
    • https://luatsuavina.com/userfiles/file/xumewiloxixuvobip.pdfIn PDF document text
    • https://unibel.pl/pliki/upload/file/86487241489.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1608caf65b44a7---22994472807.pdfIn PDF document text
    • http://www.lnk-creation.fr/upload/file/bifasivazitowisadibavupev.pdfIn PDF document text
    • https://bodzlomu.com/userfiles/file/ziragegezil.pdfIn PDF document text

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