Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3055fbde61b799…

MALICIOUS

PDF

62.4 KB Created: 2021-08-01 00:51:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 72538676a6afd558bd5b81e76ecd2d59 SHA-1: 61e5a260e65c27ffc0d4594f0bc94d377f0e7d79 SHA-256: ee3055fbde61b7994bbdb504f03c8ac4ec3de2045562d28f2424f9992c3d7420
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to PDF files hosted on compromised CMS upload directories. The presence of these links suggests an attempt to lure users to download further malicious content or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9419

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://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/70cl5r1c03qeaue3o6il84q4s8/sofuximoguvedasagud.pdf In PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16078439e2c3fc---fanog.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160796322479d6---dovutome.pdfIn PDF document text
    • http://julianina.dk/upload/file/soxubafaxadil.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f47480e26f---20520561706.pdfIn PDF document text
    • http://colescastle.com/clients/875019/File/96219700092.pdfIn PDF document text
    • https://fokusmedia.com/images/uploads/darulijekevasosob.pdfIn PDF document text
    • http://bouncebodysupplements.com/newerac2c/userfiles/file/vawojazabovoninul.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160883d6237413---43431442515.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/dc4837a24a67ea90bc3fc34483653a5c/zolegelorelebominipijalu.pdfIn PDF document text
    • http://zhfangyuan.com/uploadfiles/files/jawakojinaj.pdfIn PDF document text
    • http://vandervalk.reviews/app/webroot/files/userfiles/files/37425673730.pdfIn PDF document text
    • https://luminex.pl/upload/file/78308680067.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca62066c36---sowoluvasakufuvig.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/3cd2b6f61efad669b271c9512d23ba36/71257103566.pdfIn PDF document text
    • https://bettyloupaints.com/userfiles/files/zifuruvuba.pdfIn PDF document text
    • http://www.aluvascientific.com/UserFiles/file/vafegegigufudifa.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/dbnf01p3hq0ad6qsueg0su8r7i/fuzopetirid.pdfIn PDF document text
    • http://ahchala.com/img/file/19558394790.pdfIn PDF document text
    • http://mynigaoe.com/upload/file/20210511125721.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073ec8db05ec---51354711596.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/3023ae07414722e61ad178081444bd07/62046535822.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1608f3982c6e3c---64867544484.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a938ba154c---sugewifipomesazaf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=spoof+pokemon+go+android+10PDF link annotation

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