Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf46abdda3b2e86…

MALICIOUS

PDF

54.6 KB Created: 2021-09-17 05:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 94847401cf063fb2fb44c5dd474f882b SHA-1: 1f109c497c253bcfc397d9d66e74ceb7676cdcda SHA-256: 1bf46abdda3b2e862e79a81b4b6deb06445a0904d4361fb4b154586cca0e2399
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a link farm with numerous URLs pointing to compromised CMS upload storage and disposable hosting, suggesting an attempt to obscure the final malicious destination. The presence of embedded URLs and the nature of the link farm indicate a likely spearphishing attachment used to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6190

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vvk-wiedermann.at/userfiles/file/48908615549.pdf In PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/161397ada3ff82---70127003087.pdfIn PDF document text
    • http://babyshelter.net/assets/upload/files/47282319211.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/161397f205dc3f---nejoju.pdfIn PDF document text
    • http://strandedtattoo.info/file/wogofifaz.pdfIn PDF document text
    • http://gldbirdgel.com/user_img/files/buzagedidekatet.pdfIn PDF document text
    • http://france-ex.com/images/blog/file/89062017561.pdfIn PDF document text
    • https://dmshospital.com/mm_engg/files/79429535458.pdfIn PDF document text
    • http://kingalbertltd.com/uploadedfiles/file/64590871559.pdfIn PDF document text
    • http://musikpark-live.de/userfiles/file/19087391708.pdfIn PDF document text
    • https://maftplayer.net/calisma2/files/uploads/totukifurepelak.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/c9b83205bd741b2704273d4b6fa92acb/38152991263.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/njakc421k1nuuhf2t854gajs39/govonipanugudub.pdfIn PDF document text
    • http://spec-so.ru/sites/default/files/file/66624795355.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/98368489664.pdfIn PDF document text
    • https://vpmemorial.net/images/file/verasolofeketixe.pdfIn PDF document text
    • http://patanamachine.com/imgUpload/files/57948818919.pdfIn PDF document text
    • http://margheritango.it/userfiles/file/13582235883.pdfIn PDF document text
    • http://benly-carson.com/product/files/21390719847.pdfIn PDF document text
    • https://people11people.com/uploads/File/vinigir.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613629e54c331---xogejiwasanoku.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/xozudebi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=gas+prices+increasePDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.