Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2af0c79896552be…

MALICIOUS

PDF

83.6 KB Created: 2021-07-31 05:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: d7e2791f1006cd7bcee377c567bfa5d9 SHA-1: 0546d9d8c21bcbfe297f2783cd668b2279eb367b SHA-256: d2af0c79896552be2fc4e95a55f3ffad429b5a2c66d789f6e08a09dca158c48a
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised websites, some of which are hosted on WordPress installations. The embedded URLs suggest an attempt to lure users to external malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7481

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://smidgel.ru/uplcv?utm_term=la+sombra+del+caudillo+analisis+literario PDF link annotation
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160729d9ec989e---39381645916.pdfIn PDF document text
    • https://evergreencans.com/userfiles/file/99697473489.pdfIn PDF document text
    • http://novelinternationalschool.com/ckfinder/userfiles/files/47067752121.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/a2df397e0b472fb092db1a5136407e4d/gubamodawojuf.pdfIn PDF document text
    • https://dakotaterritorydevelopment.com/ckfinder/userfiles/files/kigut.pdfIn PDF document text
    • http://w-f-l.de/user_img/file/jekep.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/6mn67f46r21lfe0gobmqdkkgp1/27024055418.pdfIn PDF document text
    • http://rivieahk.com/clients/5/51/51325344bd1517f257d6959d5350918e/File/xunezikezojed.pdfIn PDF document text
    • http://clintonseniorhighclassof77.com/clients/e/ec/ec6cde7faca09d53f5ba1fe44cd32e38/File/gobefokizosofe.pdfIn PDF document text
    • http://imssp.by/data/images/fxeditor/file/ponapujiduduvemosera.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/aebc3e970713c61c021575ed703514af/lafiri.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/dadiwilojaxaveredosiloni.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb51228e56---ditimovapatodevajazotuwox.pdfIn PDF document text
    • https://eastmanllc.com/ckfinder/userfiles/files/nokurimufut.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16082ae53a4e4e---xinusekifuwetori.pdfIn PDF document text
    • http://studioguidobarbieri.it/userfiles/files/62814010077.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1606f519d3b31b---12493389469.pdfIn PDF document text
    • http://www.neslihanonur.coIn PDF document text

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