Malicious PDF — malware analysis report

Static analysis result for SHA-256 408a0bd598e69a40…

MALICIOUS

PDF

44.6 KB Created: 2021-09-19 18:17:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 3ba5ac5db50349f30eca497704b5291a SHA-1: eb242cdaa5ea74f32bcf3bee10a7c7550e2c3011 SHA-256: 408a0bd598e69a4078e8f0125d295dd9a2d27e9bc0c650d156ab915d69a04e76
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to a link farm hosting further malicious content. The embedded JavaScript is likely used to facilitate the redirection or obfuscate the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9245

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 http://air-ned.com/uploads/files/xojipake.pdf In PDF document text
    • https://oazapiekna.com/zdjecia/fck/file/sepexe.pdfIn PDF document text
    • http://togclick.com/media/userFckfiles/file/93841241381.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135117886e90---newudetizavanixizuti.pdfIn PDF document text
    • https://bodymart.in/ckfinder/userfiles/files/76077411805.pdfIn PDF document text
    • http://interreg-ipa-husrb.com/downloads/dunusimimolokexasivefezop.pdfIn PDF document text
    • https://rintrans.com/files/82111758536.pdfIn PDF document text
    • http://siamintertrade.com/file_media/file_image/file/xoxuxufixogutixokekobu.pdfIn PDF document text
    • http://ydchem.cn/filespath/files/20210919001746.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/d429dbac5f5885440e2135e345c56e86/faxuwitevupipepagenema.pdfIn PDF document text
    • http://fuyu.010bi.com/ckfinder/userfiles/files/ketewuzoporinuwo.pdfIn PDF document text
    • https://sanipro.ma/app/webroot/uploaderfiles/44789675205.pdfIn PDF document text
    • http://gyuco.com/uploadfile/files/20210916_202144.pdfIn PDF document text
    • http://islaminkiel.de/webmisr/uploadwebmisr/file/81479248554.pdfIn PDF document text
    • http://isagenixmakessense.com/ckfinder/userfiles/files/pavajeba.pdfIn PDF document text
    • http://zaintik.org/files/galeria/files/75490381727.pdfIn PDF document text
    • http://volvo-cars.jp/js/upload/files/50834293221.pdfIn PDF document text
    • http://catherine-massage.com/ckfinder/userfiles/files/fexixirorekibaditijibu.pdfIn PDF document text
    • http://gavionescodeinsa.com/userfiles/2909480430.pdfIn PDF document text
    • https://aimtronu.org/userfiles/file/dagin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=derivative+of+exponential+growthPDF link annotation

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