Malicious PDF — malware analysis report

Static analysis result for SHA-256 160c0920c8075329…

MALICIOUS

PDF

66.5 KB Created: 2021-07-19 20:06:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 23c26df80e2b128c04159d5a89aebf6b SHA-1: 46605e50395d0d724d866aa5bb707765e7df8074 SHA-256: 160c0920c8075329e2f5147642427a80250c6f6b66dc3fd025a9b6bbe8656104
124 Risk Score

Malware Insights

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

The PDF file contains numerous links to compromised websites, including WordPress uploads, indicating a link farm designed for malware distribution or phishing. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The embedded URLs and link farm structure suggest an attempt to redirect users to malicious content, likely for downloading unwanted software or stealing credentials.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4829

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://www.zywawiara.pl/pliki/31522668.pdf In PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/dd8ca0636d9d108ac57e4dbb9150857f/20529078149.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c065261feba---38430585787.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160af1e2d86440---wilerosuxosuluzato.pdfIn PDF document text
    • http://kcobafl.org/ckfinder/userfiles/files/65449962018.pdfIn PDF document text
    • http://zovsh.com/Uploadfiles/files/jitorawuver.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/robutetabipuj.pdfIn PDF document text
    • http://effektfilm.de/files/file/33159638746.pdfIn PDF document text
    • http://fitviewer.de/files/file/zosoduro.pdfIn PDF document text
    • http://ekolojikweb.net/upld/userfiles/file/14750984296.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d023d8881---wodazojafokux.pdfIn PDF document text
    • https://cornerstonelaw.eu/userfiles//file/falosobesedugasosore.pdfIn PDF document text
    • https://gruntbudowa.pl/files/file/vuzoxu.pdfIn PDF document text
    • https://bikidi.com/UpFiles/WebEditorFiles/file/87434920396.pdfIn PDF document text
    • http://htwy.com/upload/file/fojop.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/2969fdac1108053947aa1447ee3d06fd/rurizazitixezorapufolo.pdfIn PDF document text
    • http://iccj.jp/images/uploads/fckeditor/file/dawidosekadokawudomufo.pdfIn PDF document text
    • https://tcremich.lu/files/files/fenakojudakukiduzeres.pdfIn PDF document text
    • http://win-sonic.com/kida2018/ck_imgs/files/watuva.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d4617467bd3---dojomoxanusisomefoluf.pdfIn PDF document text
    • http://bebelino.ru/userfiles/file/gojexapawegisas.pdfIn PDF document text
    • https://global-brand.net/userfiles/files/43652976753.pdfIn PDF document text
    • https://epiphanych.com/images/file/20063484265.pdfIn PDF document text
    • https://vieclamxaydung24h.com/upload/files/fidaxaduva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=td+bloons+6+downloadPDF link annotation

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