Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f51ee016f75eb2f…

MALICIOUS

PDF

47.8 KB Created: 2021-09-04 17:02:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 6f5b2b38236768c04184a0061bc65058 SHA-1: 55e1f7cc8fdf4c2f7e1540f7189f2f2b7949528a SHA-256: 9f51ee016f75eb2fb0a6ddd1b287a9932d74c9f3d91975aca5ad277c896bc283
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous embedded URLs that point to other PDF files hosted on various domains, some of which appear to be compromised WordPress sites. The presence of these links suggests an attempt to distribute further malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9298

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://smartpaintingplus.com/userfiles/files/didomana.pdf In PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/f9e224cb6a9af0fb0eb860f619220692/21329365273.pdfIn PDF document text
    • http://radio6deenero.com/uploaded/files/70889086261.pdfIn PDF document text
    • http://congtydaihai.com/upload/files/gesofuzujizikazifirikal.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/14814850167.pdfPDF link annotation
    • http://dd-eng.com/files/files/runomusaxumetu.pdfIn PDF document text
    • http://bugaboo-buffalo.eu/UserFiles/File/wojosidawuzedoxexetuke.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/t1qtlcrdei7a7ajs6gc1g71d41/lulav.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/c4367f201a525254e8177f558da14955/79556711101.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/d013fe5daa9a647aa2fb98c86561cbbb/84989155197.pdfIn PDF document text
    • http://mega-gold.com/userfiles/files/95635395859.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/96800049928.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f94f05e1e9---refokatomepexem.pdfIn PDF document text
    • https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/fapasonadu.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/1df6f6c0965612eb6baeedb13718b143/nexutozopituzake.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/4423b873fe214632115c851eadff4ed1/25321244422.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/pinipizuritobi.pdfIn PDF document text
    • http://scales-center.com/shop/fck_file/file/tazifebisuzotarodavig.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae2f75e1f1---dabeludisovogajone.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4e28f2018---kukebezuvumefetezixibepuf.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/566509b9edff6484ffea57827fc82081/89101986017.pdfIn PDF document text
    • http://indyztyle.com/ckfinder/userfiles/files/93487800760.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/3847defbc9591d66c3bae84f460bd7ae/19943666977.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=tensiometru+omron+m3+manualPDF link annotation

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