Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea0540d77fd4679…

MALICIOUS

PDF

48.0 KB Created: 2021-07-27 13:32:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e987c4f376abbfd03e5f18c973c98ee9 SHA-1: d7b78059df51ed88da77bfa783f0620b70c556fc SHA-256: 8ea0540d77fd46791a1b39c80eff735cd58f265a91ebf7b09183ef26263d8014
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to domains associated with compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7059

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://aeternoplanning.com/ckfinder/userfiles/files/9412015702.pdf In PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097e8978da8d---7103951737.pdfIn PDF document text
    • https://comfortinnbarrie.com/phpsites/vertical_living/uploads/file/94225541720.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/4c63656f52f00a941e021b2edef8d45f/zukuf.pdfIn PDF document text
    • http://muzeumostrowiec.pl/obrazy/file/22716010499.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607cac68b1027---fezoxefirurew.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/70170087173.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beddcd6a407---dexumizidipidaxovugirega.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16072f8bd3bb45---wamexuzafaxusewilifen.pdfIn PDF document text
    • https://szaktel.hu/uploads/file/fazejitimokatefipew.pdfIn PDF document text
    • https://sfeerweter.nl/userfiles/files/savalasepapukodeg.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/97c6db8ca15861abcd8c670a774895a2/luvemas.pdfIn PDF document text
    • https://novzelandiya.ru/ckfinder/userfiles/files/xadazukurojukesadogaba.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c09eb0083---tijunereb.pdfIn PDF document text
    • http://sea-cruise.ru/ckfinder/userfiles/files/86589204217.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/752904c48813557412359ba462faad03/30151709216.pdfIn PDF document text
    • http://trunglam.vn/uploads/userfiles/file/muleletexipurabiwip.pdfIn PDF document text
    • https://atrax.eu/userfiles/file/kumoxuwuzajonisezodu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=%C3%A9valuation+num%C3%A9ration+cm1+les+nombres+jusqu%27%C3%A0+9+999PDF link annotation

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