Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e194a578e65fdc0…

MALICIOUS

PDF

62.3 KB Created: 2021-06-08 23:21:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 3d0fcde5174e6c46cf5d2ceab9a6f7ce SHA-1: 6dfd28922553a455f1d0f2e584718f5608a1e969 SHA-256: 7e194a578e65fdc045ad0d5ff9ee21fbbf6e64ddf4f4b16fc14a10877c7a0add
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for distributing further payloads or leading users to phishing sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9291

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://nomylo.ru/uplcv?utm_term=preposition+checker+online PDF link annotation
    • http://smiletoursvietnam.com/ckfinder/userfiles/files/80740457253.pdfIn PDF document text
    • http://anandamsanyal.com/userfiles/file/zivodaxiwanituna.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/167e4c1efa72d9cdb37807b0b2906971/xobezosaxaz.pdfIn PDF document text
    • http://arch-teh.com/pic/userfile/sejolilasip.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/9001231466.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/11e41d3ad111758e3de4dd144086170d/55241760361.pdfIn PDF document text
    • http://all-pass.com/folder/editor/file/tamulipamewuxokizuwip.pdfIn PDF document text
    • http://zartmobilia.com/userfiles/file/20210530080637.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/22630995476.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1950bce287---86316943461.pdfIn PDF document text
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/51c293bee38408702c137933a483851e/zonexi.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/ecda542cde7390aae0c7823c5c19786b/55019513713.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/46360812236.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/23744665665.pdfIn PDF document text
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/60210790684.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b1ebd74b475---96260249565.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/b8879d03505c5ebb715c673c4b2579cf/6995380091.pdfIn PDF document text
    • https://cafe-malaysia.com/contents/file/renirejixujuz.pdfIn PDF document text

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