Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecec2f03d6f70e12…

MALICIOUS

PDF

51.0 KB Created: 2021-09-26 16:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 664aa66458a91df61f50ee5a3a09c40b SHA-1: e4d2e24ec93d0fc66e7415e118947d25e9816658 SHA-256: ecec2f03d6f70e12ab2d81101e47995ad0825a94bd0a62f6d6c7ab721e511a6b
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress upload storage or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier further support its malicious nature. The embedded JavaScript likely facilitates the redirection or further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

Heuristics 6

  • 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.
  • 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://orderbestwings.com/uploads/files/mudajadaziva.pdf In PDF document text
    • http://metabolit-plus.ru/files/file/rotikigemev.pdfIn PDF document text
    • http://daliangluyinpeng.com/userfiles/file/89777387051.pdfIn PDF document text
    • http://papianiarch.it/userfiles/files/regawevirawop.pdfIn PDF document text
    • http://sherwoodchambergolf.org/ckfinder/userfiles/files/74699111103.pdfIn PDF document text
    • http://limoride.net/gallery/file/29116023575.pdfIn PDF document text
    • http://sergeisurzhin.ru/ckfinder/userfiles/files/7197857850.pdfIn PDF document text
    • http://battle.bpv.su/content/files/files/31404663632.pdfIn PDF document text
    • http://m2m2design.com/userfiles/27411826143.pdfIn PDF document text
    • https://designsdubaiukfashion.com/userfiles/file/zizibinarimobiwuxevunu.pdfIn PDF document text
    • http://irths.com/upload_files/files/wotesapozipivamodoviru.pdfIn PDF document text
    • https://ceccarmaramures.ro/userfiles/file/12407459070.pdfIn PDF document text
    • http://zeguvietnam.com/uploads/ckfinder/files/buxapogibunibefafirewi.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/wenefolakedofapeven.pdfIn PDF document text
    • http://esipro.be/userfiles/file/notukofitetuz.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139461ebaeba---domesugejifamedub.pdfIn PDF document text
    • http://ckpak.com/fckeditor/userfiles/file/55564223442.pdfIn PDF document text
    • https://webaruhaz.solar-napkollektor.hu/js/ckfinder/userfiles/files/lazikibajexirejoga.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144e2e7d32c8---vewivunitekepisopiv.pdfIn PDF document text
    • http://prmakeup.com/Image/files/rototovevojolokosudifevu.pdfIn PDF document text
    • http://swancentive.com/cote_dor_import/admin/ckfinder/userfiles/files/57587935324.pdfIn PDF document text
    • http://emachn.com/data/attachment/file/pesojekegulo.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff92d6c77f---32608418966.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/161316304842c2---kuvinidabedegabudizapowo.pdfIn PDF document text
    • https://hinodecoder.com/userfiles/file/lariwitifaviboloror.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=watch+free+guy+online+free+streamingPDF link annotation
    • http://irodori.kir.jp/files/file/fepatigobevozixepago.pdfIn PDF document text

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