Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a9043647c6902d8…

MALICIOUS

PDF

47.6 KB Created: 2021-09-24 14:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 0cd68c4076542d2bc3223005d7490de3 SHA-1: bab407167e3de8ebe3ae56cef52f3cd5734bfaee SHA-256: 5a9043647c6902d8a15b7a6292cb87db45234942244ada2bbe811741bb98cdf9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It functions as a link farm, containing numerous URLs pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting. The embedded URLs suggest an attempt to lure users into clicking through to external sites, likely for credential harvesting or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6441

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
  • 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.
  • 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://www.culturehousesun.org/photos/file/91169067605.pdf In PDF document text
    • https://vwb.mrv-educationservices.com/content_file/files/nalijupidefebuxop.pdfIn PDF document text
    • https://deverfgrossiercms.deindrukdemo.nl/upload/files/juvatew.pdfIn PDF document text
    • https://djennebeads.com/nbloom/fckuploads/file/70339040955.pdfIn PDF document text
    • http://glavis.biz/userfiles/file/53025781259.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161494f571e906---lolidekavotawopebu.pdfIn PDF document text
    • http://csa.china-led.net/static/editor/ckeditor/ckfinder/upfile/files/sidimixanomukerisogu.pdfIn PDF document text
    • http://trustycctv.com/ckfinder/userfiles/files/vudadijitogeveji.pdfIn PDF document text
    • http://annabarons.com/files/files/lokuvovagegedelidel.pdfIn PDF document text
    • http://kossuthdigisuli.hu/userfiles/file/99093129988.pdfIn PDF document text
    • https://qeyeoptical.com/ckeditor/ckfinder/userfiles/files/pefazimuf.pdfIn PDF document text
    • http://wx-bm.cn/upload/ckimg/files/202109180001149572.pdfIn PDF document text
    • http://bantinnhadat.com/users/files/kupanelovigik.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/42kck7k8004o0o6dioam9h41da/wiroluxiwilepijobo.pdfIn PDF document text
    • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/dojoraxipotavo.pdfIn PDF document text
    • https://safewatersolutions.in/ckfinder/userfiles/files/tifaletavuzolet.pdfIn PDF document text
    • https://a1-recruitment.fr/v2011/Files/fck_upload/file/bedetuzoseme.pdfIn PDF document text
    • https://4of100churchstreet.com/assets/media/files/53073757730.pdfIn PDF document text
    • http://oresteruggiero.com/userfiles/files/89205355695.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1613d16a6e22ca---60873726582.pdfIn PDF document text
    • http://nemeckystrakac.sk/editor_uploads/files/3433976762.pdfIn PDF document text
    • https://vibingvibes.com/userfiles/files/81255488877.pdfIn PDF document text
    • https://gtijsr.com/userfiles/file/pakidedugono.pdfIn PDF document text
    • https://bvphcn.bdata.vn/upload/files/95059459781.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=apk+sports+livePDF link annotation
    • http://s250801404.onlinehome.fr/img/uploaded/file/kivasoremejafaz.pdfIn PDF document text

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