Malicious PDF — malware analysis report

Static analysis result for SHA-256 d698b3bc7e319102…

MALICIOUS

PDF

41.5 KB Created: 2021-09-29 07:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 6cf46766843db7ddbfa548cb5b0ede81 SHA-1: 92af64f7e80fc7929d4c54d07ca9c8996953744a SHA-256: d698b3bc7e31910295a1056520b14dd5c2d0a171c47dada223f6551630d005d9
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs pointing to disposable domains, suggesting a link farm designed to distribute malware or facilitate phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8710

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://smidgel.ru/uplcv?utm_term=viata+de+cartier+apk+download PDF link annotation
    • http://tourhong.com/FileData/ckfinder/files/20210924_1164D4DDFFCD3969.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/348k23h7n249dh3kejp53tkss8/42153685015.pdfIn PDF document text
    • https://7foro.exceltur.org/exceltur_nuevo/ckfinder/userfiles/files/ruratika.pdfIn PDF document text
    • http://beveragesgs.com/userfiles/file/zasowi.pdfIn PDF document text
    • https://pasarant0g3l-turbo-h1t.com/contents/files/baroraxojuloj.pdfIn PDF document text
    • http://aftp.bg/userfiles/file/kikofovavabibegukanewu.pdfIn PDF document text
    • http://kepco-group.com/uploaded_files/userfiles/files/radap.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/83198594667.pdfIn PDF document text
    • http://techbis.pl/files/file/49024365914.pdfIn PDF document text
    • http://majedalkarkhi.com/pics/file/48754593331.pdfIn PDF document text
    • https://tumujerrusa.com/userfiles/gujuwaleguwurapoxopam.pdfIn PDF document text
    • http://www.pataniforum.com/admin/jquery/ckfinder/userfiles/files/rajivawenowewenogigi.pdfIn PDF document text
    • http://studiorumeo.it/userfiles/files/34499081411.pdfIn PDF document text
    • https://fiscalonline.ro/app/webroot/files/userfiles/files/42510390942.pdfIn PDF document text
    • http://cu-hinothai.com/ckfinder/userfiles/files/faliv.pdfIn PDF document text
    • http://veszpremkosar.hu/_user/file/xugolukuwunarububixup.pdfIn PDF document text
    • https://sapsda.org/SapmaUserfiles/file/zigodexa.pdfIn PDF document text
    • https://10kshot.com/customerinterview/ckfinder/userfiles/files/19048092349.pdfIn PDF document text
    • http://playeasypiano.com/resources/fck_images/81702417282.pdfIn PDF document text
    • https://penzion-palice.cz/content/naletarudusafupatu.pdfIn PDF document text
    • http://ministerium.pt/files/rodejulovuf.pdfIn PDF document text

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