Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ebe4e68a40f1017…

MALICIOUS

PDF

61.0 KB Created: 2021-09-13 10:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 3890f2fe4af497df42501f7f8180ecc6 SHA-1: 008435a80c393ea10597c15d7660334f715d0a64 SHA-256: 8ebe4e68a40f10174fb5d6506dbfdbf4880dd75656ed0328998da686f4a3bb56
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The ClamAV detection and ML classifier flagging indicate malicious intent, likely phishing or malware distribution. No scripts were extracted from this sample, but the presence of external URIs and link farms is a strong indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6618

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 https://crewmak.ru/uplcv?utm_term=iptv+ultimate+player+apk PDF link annotation
    • http://laskod.hu/userfiles/file/jerolifigowilixove.pdfIn PDF document text
    • https://sunridgecorp.com/uploads/files/202109110023121227.pdfIn PDF document text
    • https://newegys.egyseg.eu/ckfinder/userfiles/files/jazerimajobuvozepuk.pdfIn PDF document text
    • http://old.arcnet.org.tw/ckfinder/userfiles/files/rakofosotumewagofix.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cca165d497---kozog.pdfIn PDF document text
    • http://elateridae.com/images/FCKeditor/file/69038117177.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613127cc5317c---nanakizivebojaforazi.pdfIn PDF document text
    • http://alpinedelhi.com/userfiles/files/57783929092.pdfIn PDF document text
    • http://eaas-journal.org/survey/userfiles/files/leguledarexowuneribibi.pdfIn PDF document text
    • https://buonoantonio.it/userfiles/file/21385218646.pdfIn PDF document text
    • http://ezclasssites.com/var/wwww/dev-ezclasssites-com/data/files/wisaluse.pdfIn PDF document text
    • http://rafaelstore.ru/upload/files/93328169135.pdfIn PDF document text
    • https://www.scmsgroup.org/ckfinder/userfiles/files/donojikarozerutisow.pdfIn PDF document text
    • http://ilonew.tasksplan.com/ckfinder/userfiles/files/88932093383.pdfIn PDF document text
    • http://tourbusan.net/FileData/ckfinder/files/20210906_BFBEE0E17794836C.pdfIn PDF document text
    • https://www.ebenisterie-burette.com/ckfinder/userfiles/files/13657884086.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/jdp5fa5im45kv3ms3i4m8butj3/tanuzu.pdfIn PDF document text
    • http://beastyenergy.com/userfiles/file/17827778079.pdfIn PDF document text
    • https://tennis-samara.ru/img/file/70601890510.pdfIn PDF document text
    • http://orderbestwings.com/uploads/files/limunarijukuwamusofed.pdfIn PDF document text
    • http://psystems.gr/Administrator/uploads/userpics/OutPostImages/files/45987949873.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/disuterugudofusel.pdfIn PDF document text

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