Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5258d1e6364367a…

MALICIOUS

PDF

43.1 KB Created: 2021-07-23 01:51:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b2907f1d650fe07f228e6bd2307e4ad7 SHA-1: ca1cbfc7027b2b6a721260150815a0a718ef5336 SHA-256: a5258d1e6364367aed154af961391a3a52c79a67ab0de06cbc14ecdb13238e1e
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing lure, including an image-only interface designed to trick users into clicking. It contains embedded JavaScript and numerous links pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to deliver a secondary payload or redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5805

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 43 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://carefirstyoungatheartgala.com/clients/b/bc/bc61c41cf33a111e4089ebab1e34a2ce/File/xuzivunoluxigoju.pdf In PDF document text
    • https://fertilizerproductionprocess.com/d/files/janafilusaz.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071215dc8eac---powitab.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c45244637---ruxil.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606d35f23d2c9---sagit.pdfIn PDF document text
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/e47bfcc55bb0c11f6769cbd13dcd2c2d/52418514490.pdfIn PDF document text
    • http://mtlebanon62.com/clients/5/5e/5ee551a8be14a26d7d76bc5e90dd1372/File/xobefezijolawusukinomiwef.pdfIn PDF document text
    • http://dentherapia.hu/files/file/3853167253.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5e027ab65---95093251226.pdfIn PDF document text
    • http://nhs1980alumni.com/clients/878257/File/bijijuveluposabusumiw.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/28636542922.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/2fd5fa8a94da167f1cf4e2c580f75db9/46703497890.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/6da388c6ad2dd89a38beb3e39c6c5d3b/19642716928.pdfIn PDF document text
    • https://czus-lukasa.sk/userfiles/file/peraketak.pdfIn PDF document text
    • http://taiyoaquris.cn/upload/userfiles/files/20210529193237.pdfIn PDF document text
    • http://hondasushi.com/uploads/files/jawuwasisamawisulesuf.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/5223cb4457d949c3b08406b380b35f0e/wisisefo.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1607940ed16a7c---liropaposadevatix.pdfIn PDF document text
    • http://sbs-group.co/userfiles/files/73977511258.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160edda4017fb9---toxenu.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160987e3d94329---26996846274.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/96879271165.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/v015savkebkdn0o4uf6jba428k/33006779262.pdfIn PDF document text
    • http://cainghienbinhduong.com/uploads/userfiles/file/giwusaxobetu.pdfIn PDF document text
    • https://hmanagement.net/userfiles/file/lotud.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/17252435163.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=tailoring+shadowlands+guidePDF link annotation