Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae5031291841c3a…

MALICIOUS

PDF

51.1 KB Created: 2021-09-13 10:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 44e875ec4bd02e46bfbf64cbee843fe7 SHA-1: dcfdd52641b80627614a09752f5d28e68ec0b53e SHA-256: aae5031291841c3afee9e46c6dd53fcb0cb7f5c9fb4658067c9e05bc1d2e89be
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to potentially malicious files on disposable domains, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the structure and numerous external links point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9259

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gitteszoneklinik.dk/ckfinder/userfiles/files/rurufukodi.pdf In PDF document text
    • https://okazionche.com/files/54153985720.pdfIn PDF document text
    • http://forti.in/userfiles/file/lasugokepofamarisipavol.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/161390540cba2f---jidomutosemomiranoxuro.pdfIn PDF document text
    • http://phulieumaymacbaoco.com/hinhanh_fckeditor/file/19757672475.pdfIn PDF document text
    • http://kooijobs.in/ckfinder/userfiles/files/noxezal.pdfIn PDF document text
    • http://dkmmotor.com/files/userfiles/file/pobepofogurugepako.pdfIn PDF document text
    • http://maihome.hu/admin1/file/gubonopojibo.pdfIn PDF document text
    • https://pmcp-avac.com/files/upload-ckfinder/files/wewidididigawa.pdfIn PDF document text
    • http://pincesorvarshop.hu/editor_up/pifem.pdfIn PDF document text
    • http://enslev-anlaegsservice.dk/userfiles/file/pejuwaza.pdfIn PDF document text
    • https://soccerauquebec.com/userfiles/file/jufaf.pdfIn PDF document text
    • http://toptoptraining.ru/img/upload/file/24094116705.pdfIn PDF document text
    • https://kolbandibileklik.com/resimler/files/zaseguwagi.pdfIn PDF document text
    • https://btegypt.com/file/57136986744.pdfIn PDF document text
    • http://manpukuorder.com/uploads/files/38087966706.pdfIn PDF document text
    • http://amdind.com/userfiles/file/vuratimo.pdfIn PDF document text
    • http://lukasikgroup.pl/Image/files/37125476885.pdfIn PDF document text
    • http://kielcenoca.pl/files/file/56885300323.pdfIn PDF document text
    • http://santamariamikado.com/uploads/files/serovajusizumiliwe.pdfIn PDF document text
    • https://rtvpuls.com/ckfinder/userfiles/files/35538244323.pdfIn PDF document text
    • https://biographiewerkstatt-singer.de/userfiles/file/74442453611.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+play+games+on+damon+ps2+emulatorPDF link annotation

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