Malicious PDF — malware analysis report

Static analysis result for SHA-256 85de6ada91e2a866…

MALICIOUS

PDF

88.7 KB Created: 2021-07-27 17:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: fdbd6583f7b197152b3600038855cc3c SHA-1: 4da1d5cdfbb5ce16736228e564ab5912ad74d2a4 SHA-256: 85de6ada91e2a866e1dbeb84a9e570acd0f5d97170040765ba6d563339c76882
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to lead users to malicious content. The PDF's structure and the nature of the URLs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9094

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 https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/1997af6ab3abfd732e8e9472113d3fe6/53371608485.pdf In PDF document text
    • http://mkngsp.ru/upload/files/63514970446.pdfIn PDF document text
    • http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/5683706170.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee8bb86a8d0---fozetegavepud.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160ba1c3a9820b---letifurenibuferebekel.pdfIn PDF document text
    • http://nanoscopy.ru/uploads/files/voxomusawifesikaremaku.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfca797ce2---fejililikot.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083f094823fc---65198567306.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7ee66d66d6---4669348336.pdfIn PDF document text
    • http://contextuae.com/resimler/files/pakedesatuzo.pdfIn PDF document text
    • http://yunnanyingxiang.com/ckfinder/userfiles/files/84939216795.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/e4b0r13vu241n2ku2nsc5917qg/nufipakuzimaxedamop.pdfIn PDF document text
    • http://ville-dammarie.com/ckfinder/userfiles/files/sekixuwuvenidedivi.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9dd7f3357---silosudiniruvopewareb.pdfIn PDF document text
    • http://mega-stainlesssteel.com/uploads/image/files/gitedupopemonowetebow.pdfIn PDF document text
    • https://espiber.cl/images/uploadedimages/file/42441303854.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/35f9e811c3cae87a38ff6f9375549f5c/57473124137.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/susesevejo.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/sdsbla57fb40fdbbhbm6l95if0/89299866913.pdfIn PDF document text
    • https://sjalikave.hu/pictures/file/dadetivogenid.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/13578083190.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a715d0dd690---vesalomajofazulorumeguti.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=hugh+masekela+sheet+musicPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9F 17492 bytes
SHA-256: 738a27bf59b875b151b66e69291e446009c47a12fee7bdf6e69323fef3356790
font_01_sfnt_off00013cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CD2 10536 bytes
SHA-256: 52ab908580190dbcd110ae1e2b27233b37bba1da9d50c25343101c53d0da02a7

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