Malicious PDF — malware analysis report

Static analysis result for SHA-256 de410bb6f7b96ccb…

MALICIOUS

PDF

58.1 KB Created: 2021-09-16 22:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b99ec036adce517d5cc3c1fad07dce46 SHA-1: 50166223f2ead1a9ac686236a2ff6a9f1ba18388 SHA-256: de410bb6f7b96ccb523ce111b5eca3d36c967d81fae59afabaa89669c6e91084
154 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL patterns are indicative of a malicious link distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6236

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 http://elmbbq.com/uploads/files/dixuzakusu.pdf In PDF document text
    • http://www.findvoters.com/userfiles/file/gozig.pdfIn PDF document text
    • http://kuhomania.ru/ckfinder/userfiles/files/tuzab.pdfIn PDF document text
    • http://reopen911.info/media/file/selamavebajuvulosox.pdfIn PDF document text
    • http://quangcaovuanh.com/vietkiendo/upload/file/77538474842.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/83268906108.pdfIn PDF document text
    • http://balone.net/_upload/file///22240495007.pdfIn PDF document text
    • http://stluciachamber.org/uploadedImages/contentImg/file/46637518727.pdfIn PDF document text
    • http://eurogeographyjournal.eu/admin/fckfiles/file/sowaduw.pdfIn PDF document text
    • http://areopag-group.ru/sites/default/files/uploads/kawasenosoxusofalov.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614010e9c3de2---99963450625.pdfIn PDF document text
    • http://tichdiem.surecare.vn/uploads/userfiles/file/66726818194.pdfIn PDF document text
    • http://snsi.jp/image/news_file/poxulakeg.pdfIn PDF document text
    • https://eternalbliss.net/file/2308562926.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613143c3b0fab---31386665944.pdfIn PDF document text
    • https://wietsevoermans.nl/ckfinder/userfiles/files/tuzazojafufupevuxon.pdfIn PDF document text
    • https://buzascsaba.hu/userFiles/file/15686981684.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/zivanij.pdfIn PDF document text
    • http://ccsilver.kr/files/fckeditor/file/1483838814613882b090af1.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fed467b73c---95285987901.pdfIn PDF document text
    • http://7166867.ru/ckfinder/userfiles/files/51340452163.pdfIn PDF document text
    • https://www.leasing.net.in/ckfinder/userfiles/files/jizujoxukujadamokaximadun.pdfIn PDF document text
    • http://karaokejdi.com/ckfinder/core/connector/php/upload/files/galabudokaduviraxogitux.pdfIn PDF document text
    • https://vwb.mrv-educationservices.com/content_file/files/62639817445.pdfIn PDF document text
    • http://hardiebase.com/uploads/assets/filefile/lubatafuwumezolapib.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=nemesis+games+pdfPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.