Malicious PDF — malware analysis report

Static analysis result for SHA-256 e086fe88f68af1da…

MALICIOUS

PDF

57.9 KB Created: 2021-09-05 21:32:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ebcdc229da24d1057e91001c26558fa3 SHA-1: 7d1e70c31e6fe1c3c112787238914cfb035142ac SHA-256: e086fe88f68af1da79e1b78b94e0d88b9ca694851738cad23beeacc8b8ec7fc0
124 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as a phishing trojan. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting. These links are likely intended to redirect the user to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4489

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dzwigipoznan.pl/userfiles/file/rudiw.pdf In PDF document text
    • http://movesearchesuk.com/userfiles/file/tabigixiduv.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c129cf2dcd5---35459848052.pdfIn PDF document text
    • http://preiswerte-unterkunft-papenburg.de/mediapool/32177152164.pdfIn PDF document text
    • https://istanajp2.com/contents//files/93869368471.pdfIn PDF document text
    • https://hefcom-hydraulics.com/ckfinder/userfiles/files/gimerotusowebogamebagugar.pdfIn PDF document text
    • http://redeyeldn.com/userfiles/file/44875948018.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/85f2c012bf960489aa0e5ec00a36d9ad/97420421166.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///61988338841.pdfIn PDF document text
    • http://ozanatalan.com/iboard/includes/userfiles/files/sawexasavemi.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/a131244166ae721233a03fb4e3c681ab/36020504982.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160703baa95c09---kapuwe.pdfIn PDF document text
    • http://red-persimmons.com/upfiles/editor/files/paruwexisosevuxis.pdfIn PDF document text
    • http://chipublichouse.com/ckfinder/userfiles/files/jumalaxizobelaxozevotuxo.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5cc0c4f7b---jedegelunofexatejixesi.pdfIn PDF document text
    • https://upbilbao.com/ckfinder/userfiles/files/wipewekitirokexeb.pdfIn PDF document text
    • https://intekcanada.com/ckfinder/userfiles/files/61331096830.pdfIn PDF document text
    • http://abwingsde.com/uploads/files/buxewagupasa.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/76370565608.pdfIn PDF document text
    • https://www.ojchamber.com/ckfinder/userfiles/files/54906815014.pdfIn PDF document text
    • https://tezerwatch.com/file/upload/files/06-25-09-12-33-49.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/b501e836276095111da9933308f584e6/zaberigul.pdfIn PDF document text
    • http://ownlines.com/upfiles/file/95954343560.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160952c0f79b11---35600669330.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/fbf39eca257d94d35f13631468740129/butak.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/40e61bf0b89128e567ad1f997a7ee96f/vebedadufuweno.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=ipr+biosafety+and+bioethics+pdf+free+downloadPDF link annotation

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