Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a86c8cb1e33d774…

MALICIOUS

PDF

47.5 KB Created: 2021-10-02 14:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: ec5e67959d3720abd7f3158dafd5b9a1 SHA-1: 061f5cfdada0b0953351151b4ddc872a1a11bce7 SHA-256: 2a86c8cb1e33d774ea1ca5469bef757832728eac7185a16cb51325aa6590709f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier also indicated maliciousness. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF contains numerous links to potentially disposable hosting sites, suggesting a phishing or malware distribution attempt. No scripts were extracted from this sample, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7886

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://hermanosgolbano.com/admin/fckeditor/editor/filemanager/connectors/phpfile/vazimutufudipatu.pdf In PDF document text
    • https://alpinashop.bg/files/76097669838.pdfIn PDF document text
    • https://nabijdefossa.nl/upload/files/26953411532.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/b18d11fcf1d3b9cf23cc68646ed067ba/pifakejixakure.pdfIn PDF document text
    • https://bharatiyabhashaparishad.org/ckfinder/userfiles/files/57335127442.pdfIn PDF document text
    • http://louisefarmersmith.com/admin/ckeditor/ckfinder/userfiles/files/34837863299.pdfIn PDF document text
    • http://managhantasala.net/mailuserfiles/file/lubilazisutefamikupelif.pdfIn PDF document text
    • http://bishnutoursandtravels.in/userfiles/file/detezazurimiropesefi.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/gesikaziwifabupiguvowelag.pdfIn PDF document text
    • http://chetaomaynganhnhua.com/uploads/files/silitaf.pdfIn PDF document text
    • http://www.tramag.pl/upload/file/fisedudirapinilozarawasa.pdfIn PDF document text
    • http://thomasgearon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/roganawoserivojalibikolib.pdfIn PDF document text
    • http://gloteckr.com/upload/editor/file/turilidisaziporuloluxa.pdfIn PDF document text
    • http://arc-exir.ir/cache/fck_files/file/miwafetijilabogewivikig.pdfIn PDF document text
    • http://rebeccaosborne.com/uploads/95890798860.pdfIn PDF document text
    • https://rivieresoceanie.com/userfiles/file/lexusis.pdfIn PDF document text
    • http://hotelrealerimini.it/userfiles/files/vegawofojogufut.pdfIn PDF document text
    • https://cristalparkhotel.com/ckfinder/userfiles/files/mojekuxipiminesozetizar.pdfIn PDF document text
    • http://zubrcup.by/files/files/kepulafumitafimetixej.pdfIn PDF document text
    • https://essaidafm.com/uploads/FCK_files/file/56044991976.pdfIn PDF document text
    • http://chrisnoblelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/88786641788.pdfIn PDF document text
    • http://goteneplast.se/files/images/file/93391326655.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=radiation+oncology+physician+salaryPDF link annotation

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