Malicious PDF — malware analysis report

Static analysis result for SHA-256 aadce3d87274bd93…

MALICIOUS

PDF

47.6 KB Created: 2021-07-16 14:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: cd620d3823e2b102cfe1c13703015df9 SHA-1: 2495dd88d92e75a5878f9678c8019f53b1240745 SHA-256: aadce3d87274bd93579db88cb2ef4a215955e845682d6634927aa9e750ca4eef
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded URLs that point to compromised websites and disposable hosting, suggesting it is part of a link farm designed to distribute malicious content or phish users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. While no scripts were explicitly extracted, the nature of the URLs and the heuristic firings indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

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 https://infrive.ru/uplcv?utm_term=5+days+a+week+full+body+workout PDF link annotation
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/eefj2nkuo8v9nt01ak7bs6dsr1/72853447122.pdfIn PDF document text
    • http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/31dgm48q4fs4bsvb2qdpij7u09/setodexidizodabidorudoxe.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/51394a278986d52d2e1cc69173c9e7b9/34254319607.pdfIn PDF document text
    • http://china-hold.com/UploadFile/file/20210517071352832.pdfIn PDF document text
    • http://gtshotel.it/images/file/91879277531.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/61450642215.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160bacdfa37653---49266562486.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9ccc64b55---nomowoxeposixofede.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160dc15123ee0e---29255088363.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/16e8b865a58baff638ab4a0df03512a0/86235774477.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/cvhi5e8go6v917pvd4rnilvhv6/bewofunin.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/f7f9c53f58dd7a72c133cd9c7307873e/21455912000.pdfIn PDF document text
    • https://dotcomtravelegypt.com/userfiles/files/39698600630.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a1524ac8cda---73985831233.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/37f7c74e8aa1bef38c4087cce5db9117/76922878956.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/er6v4nu642mubgd0rjavk3kq0p/detozonimovasi.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608146c5c12e3---50827628043.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160791bf11bfeb---rosowotavinot.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d18e7ea89a5---72806764907.pdfIn PDF document text
    • http://sumnerclassof1976.com/clients/4/49/49b54eafcc86ae0c30eb104ab8b91c7c/File/61483940380.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/63030138850.pdfIn PDF document text
    • http://gidaero.com/upload/fckeditor/file/76968877755.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/zadamivive.pdfIn PDF document text
    • http://fusen-es.info/yamituki-n/uploads/files/ropibomunekefugu.pdfIn PDF document text
    • http://residenzaeden-albisola.com/userfiles/files/zizivonekovolalogal.pdfIn PDF document text

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