Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6915afb2eb38de…

MALICIOUS

PDF

62.4 KB Created: 2021-07-23 22:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: de2ee2c3310ea4d4b8bdf920d9e7c9b2 SHA-1: bc5d9403e9fdd02837413bdf85bed2fc07cbd3e5 SHA-256: 9b6915afb2eb38dec1e87233fa006707d1967f6bfaf668a2eff212bfb3182ce1
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to various websites, some of which are hosted on compromised CMS upload directories. The presence of 'utm_term' parameters in some URLs suggests an attempt to lure users with specific search terms, potentially for phishing or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7689

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://accounting789.com/ThImg/file/82371779255.pdf In PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/6fdfa01d822fd6f7a4e83743532f9f62/terekabenojowivufakukewod.pdfIn PDF document text
    • http://shuimotongyuan.com/userfiles/file/lumabofokujavugi.pdfIn PDF document text
    • http://alumcity.ru/userfiles/file/63433498065.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aad618a465d---xosubugejesutiweli.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a58c55c5caf---tudijekidugipufaru.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/51261566584.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/hnjmo8hlfqs0u6hccjd56ojilo/movuli.pdfIn PDF document text
    • http://kotolantopeni.cz/file/62407531990.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/834ddd71afbececa6e948c087336a52c/43989307883.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd2aca477f---xasuseruwizodajob.pdfIn PDF document text
    • http://jessicarossitto.com/clients/7/7c/7c16b8c799dae9ffcd1258f31d6ff645/File/75934007984.pdfIn PDF document text
    • https://norservis.cz/files/files/wefevigidobabalafelesu.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/83eed19875e1b1aa23e2cb416002e036/tizunizimimigep.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c74818faf0---84974755316.pdfIn PDF document text
    • http://pechati-piter.ru/userfiles/file/10953928477.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/fdb2ab06fb0504349bb37fcc2417ae99/jexofadumagaxepo.pdfIn PDF document text
    • http://chipublichouse.com/ckfinder/userfiles/files/70046761777.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160907df982271---jezedibato.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/31040437772.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/xesuwiwawavakomi.pdfIn PDF document text
    • http://radfordhsclassof1970.com/clients/878146/File/62180558732.pdfIn PDF document text
    • http://goddesshair.net/upload/users/files/likawuzumutotafulunat.pdfIn PDF document text
    • http://www.serenissimaservizi.com//files/zunuwefazawup.pdfIn PDF document text
    • http://igigeothermal.jp/userfiles/file/rewozipupan.pdfIn PDF document text
    • http://slpclassof67.com/clients/45391/File/46781184338.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=the+sims+freeplay+cheats+unlimited+money+for+iphonePDF link annotation

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