Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f33623a5089e99…

MALICIOUS

PDF

65.2 KB Created: 2021-09-15 18:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e5c9103790c88fde2061a1091a9a15ce SHA-1: 123a08e26182cb3649585755680b55abf6e020ea SHA-256: 29f33623a5089e990b4ae3f8c42bdbfd2a91ec3ef2ce955faad5b85090aaa4cd
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or redirecting users to malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates the document is designed as a link farm, hosting numerous links on disposable domains, likely to distribute phishing content or malware. The ClamAV detection further confirms its malicious nature, identifying it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4829

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
  • 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 https://irlanc.ru/uplcv?utm_term=how+to+tell+someone+stalks+you+on+instagram PDF link annotation
    • http://shannonlakeestates.org/fck_images/file/53820271782.pdfIn PDF document text
    • http://medianet2000.net/amm_prod/image_news_popup/file/tulezinuj.pdfIn PDF document text
    • https://theipbuzz.com/images/file/80481713524.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/rasugarufixiwomebogo.pdfIn PDF document text
    • https://horkolas-gatlas.hu/ufiles/file/dubaxokaworinadilugaf.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/46820136196849f2dea0256e28ab80de/sidoxawato.pdfIn PDF document text
    • http://zuche0551.com/upload/file/xujuvo.pdfIn PDF document text
    • https://vico-real-estate.com/ckfinder/userfiles/files/pexamofasoro.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/todugofodutagobozoko.pdfIn PDF document text
    • http://www.agot.pl/upload/file/17878695814.pdfIn PDF document text
    • http://master-stroi76.ru/userfiles/file/gepivejek.pdfIn PDF document text
    • https://northcoteplaza.com/userfiles/file/tivigisunefapabawefovunu.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613b55a604f4e---5104299476.pdfIn PDF document text
    • http://nebovsem.ru/app/webroot/files/files/rasojadaforibazawup.pdfIn PDF document text
    • https://cicasoftavukatwebsitesi.demowebsiteleri.com/upload/files/sitozagejenig.pdfIn PDF document text
    • http://dsacare.com/admin/uploads/file/jivasabafunese.pdfIn PDF document text
    • http://avstralianature.ru/ckfinder/userfiles/files/7205193578.pdfIn PDF document text
    • http://nhatrangpalace.net/app/webroot/upload/files/20074254323.pdfIn PDF document text
    • http://uslugi-ogrodnicze.pl/pliki/File/kuxepizunimiw.pdfIn PDF document text
    • https://jss-moms.si/upload/File/30084928279.pdfIn PDF document text
    • https://dancleland.com/img/upload/file/74697547683.pdfIn PDF document text
    • http://creaorganization.com/depo/sayfaresim/file/42823736669.pdfIn PDF document text
    • https://olterus.net/contents/files/72419900645.pdfIn PDF document text
    • https://ddtoyz.com/ckfinder/userfiles/files/rogizupowawimifavejako.pdfIn PDF document text
    • https://mediacentre.heathrow.com/js/ckfinder/userfiles/files/mirubozugobefixixi.pdfIn PDF document text

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