Malicious PDF — malware analysis report

Static analysis result for SHA-256 e644e65c8e4aeaf7…

MALICIOUS

PDF

63.5 KB Created: 2021-08-22 00:46:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f9521e5e3fca01955711c20c8c5e83c8 SHA-1: d8b5aa1bc561e90a589d8598d8968d7f06aec191 SHA-256: e644e65c8e4aeaf7ca4aa22f4d39602602fd2c16fd3265f9503c27839123be0a
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is often used to redirect users to malicious websites or download further payloads. The document also exhibits characteristics of a link farm, with numerous external URIs pointing to potentially compromised or disposable hosting, suggesting an attempt to obscure the ultimate destination or distribute phishing content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4211

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://jinanxintiandi.com/userfiles/files/91879981057.pdf In PDF document text
    • http://abpaluso.com/upload/file/5524258746.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/mezosivoguvexa.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/dsfn4hm8u25li1kugv1seh7cti/zawezogumitanofov.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16078f6095c755---96917275870.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b564ed7a192---fixibimuvi.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/8kdm5hnnm4l4gf6q56e6belhdi/jesufimunufifokos.pdfIn PDF document text
    • http://generaldistco.com/images/file/dibanogemafuren.pdfIn PDF document text
    • http://crmrealty360degree.in/userfiles/file/bemevadamazakikinesodikij.pdfIn PDF document text
    • http://arcadia1973reunion.com/clients/3/33/33cb7023d77084166ed027ca16b579b7/File/maliti.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/fefdcd5e611d2840a628c712c67520be/8097725948.pdfIn PDF document text
    • http://esthebel.de/userfiles/file/gavizasasorenep.pdfIn PDF document text
    • http://mitsubishilongbien.vn/images/ckeditor/files/43038312177.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16113920513d7b---80029762993.pdfIn PDF document text
    • http://www.johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/95688418682.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de427ae43ee---dofagew.pdfIn PDF document text
    • https://socohoteldanang.com/uploads/image/files/pubuluwuvesepafogi.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bb7db353856---10326226151.pdfIn PDF document text
    • http://apvn.info/userfiles/file/xikapu.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/1c97ad9c5d80324fc34382aebe1853a5/sijakamixidokovuturu.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/060fe2de7d9eefdaca487885dc86067b/4161314585.pdfIn PDF document text
    • https://misbahelmudii.org/ckfinder/userfiles/files/88144998950.pdfIn PDF document text
    • http://urdu-hadith.com/survey/userfiles/files/15827228311.pdfIn PDF document text
    • https://nikolsbeauty.com/webroot/f/uploads/file/10177518012.pdfIn PDF document text
    • http://skyrun-arser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210623070125488802spizt8.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=present+subjunctive+mood+worksheetPDF link annotation

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