Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db1cd73acf3e2b7…

MALICIOUS

PDF

62.3 KB Created: 2021-09-11 08:00:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 42bcb69ae05193558b1296aa399ee34e SHA-1: 6c889dfed55dc131205e8678ceb9a5c04991b0eb SHA-256: 6db1cd73acf3e2b7cd34772ae6156dd7146335347620733c8e447f9fd669b907
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress upload storage and disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3255

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://www.annaleehuber.com/content_files/file/lubake.pdf In PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16133ce553cfc6---86710267520.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/vavekuvuxivomadubemakebi.pdfIn PDF document text
    • http://maremania.net/img_pagine/file/jasav.pdfIn PDF document text
    • http://clinicaveterinariaalbese.eu/userfiles/files/34377804187.pdfIn PDF document text
    • http://cbcom.fr/ressource/site-image/files/nojalaxokiwemamope.pdfIn PDF document text
    • http://vimar.ua/userfiles/files/lawaxebuwulaluwepe.pdfIn PDF document text
    • http://freeski.hu/freeski/file/lisejose.pdfIn PDF document text
    • https://fortworthdental.net/cmsCart/upload/file/vumixenos.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb7c6a812c---bavojibevisifupibaj.pdfIn PDF document text
    • https://rrrc.us/userfiles/file/27903076841.pdfIn PDF document text
    • https://consultemergingmarkets.cubsindia.com/files/juzodadixozimutamekumupe.pdfIn PDF document text
    • http://caratow.nl/userfiles/file/98536935663.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135193409c66---sujivanesogubabanofuxobuw.pdfIn PDF document text
    • https://istanajp2.com/contents/files/wejidofujuvajajere.pdfIn PDF document text
    • https://intervalhousehamilton.org/ckfinder/userfiles/files/43542215717.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16132b410b8e1d---37155360544.pdfIn PDF document text
    • http://www.arborvitae.cz/ckfinder/userfiles/files/gazilavonowu.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613065b31bb19---vuligenobafubonubom.pdfIn PDF document text
    • http://hajnysport.cz/FCK_userfiles/file/vunifurel.pdfIn PDF document text
    • https://syntellect.ru/Repository/file/17212847039.pdfIn PDF document text
    • https://rowsontw.com/shopadmin/upload/files/moxopezama.pdfIn PDF document text
    • http://xn--42-jlclgg6a3e.xn--p1ai/userfiles/file/tamozag.pdfIn PDF document text
    • http://mikailang.com/userfiles/file/20210903105202_720026251.pdfIn PDF document text
    • http://gazosilikatnn.ru/uploads/files/xazidewobidux.pdfIn PDF document text
    • https://mosconi.net/userfiles/file/67082547871.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/0780d558ea78063419342a4fd780c8e8/dotowup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=the+millionaire+next+door+free+pdfPDF link annotation

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