Malicious PDF — malware analysis report

Static analysis result for SHA-256 269a06a065ad957e…

MALICIOUS

PDF

56.8 KB Created: 2021-09-18 23:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1626a3541f87fb71833aec1cb1ac1daf SHA-1: e318388fa87093ffa72dfdbac5e83a85725829b1 SHA-256: 269a06a065ad957e00af60f8e0f666f805f05992c5e4954c8da8ae368738c5d1
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, many of which are part of a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing sites or download further malware. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or initiating malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5305

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://archism.ru/uplcv?utm_term=xperia+z+custom+rom PDF link annotation
    • https://kingdom.vn/userfiles/file/jizam.pdfIn PDF document text
    • https://totspotdaynursery.co.uk/ckfinder/userfiles/files/jatofik.pdfIn PDF document text
    • http://skinct.com/upload_file/file/Fl202109090426072426.pdfIn PDF document text
    • http://malopolskiszlakwinny.pl/upload/File/rogupixanovugozuxunosuw.pdfIn PDF document text
    • https://5703n1n6999-6a55.com/contents/files/sutawixeni.pdfIn PDF document text
    • http://deepakbatteries.com/uploads/file/deratetabe.pdfIn PDF document text
    • https://dijitalsanat.link/upload/files/27116886203.pdfIn PDF document text
    • http://elcolono.net/userfiles/files/xopasemelavijuwipuvuw.pdfIn PDF document text
    • http://magicfood-cn.com/files/20210916131537.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/8ggcfn6ihr54fdvpahplu8b47j/17874870531.pdfIn PDF document text
    • https://beamstraffic.com/amb/userfiles/file/julugipoxawu.pdfIn PDF document text
    • http://xn----7sbab1bcaqplb0ccyi9d.xn--p1ai/files/file/69839262648.pdfIn PDF document text
    • http://standardamulet.com/files/files/7454932663.pdfIn PDF document text
    • http://kartelabasligi.com/images_upload/files/velibajif.pdfIn PDF document text
    • http://gtlfuelmarine.com/userfiles/file/kidefexekit.pdfIn PDF document text
    • http://dgxzz.com/uploadfile/file/munirisiwawafaw.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/161373917c4468---27980152927.pdfIn PDF document text
    • http://gesundimjob.at/images/content/files/62541097505.pdfIn PDF document text
    • http://grandrosso.com/js/upload/files/gikilovup.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/2911408176.pdfIn PDF document text
    • https://ms2oke.com/contents/files/wakifoniserebiw.pdfIn PDF document text
    • https://loffoxfitness.mvwebsolution.com/userfiles/files/xagewuxovuwivebifised.pdfIn PDF document text
    • https://hondaotohaiphong.vn/upload/files/107945689.pdfIn PDF document text