Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b3e281ee388dde5…

MALICIOUS

PDF

66.4 KB Created: 2021-07-15 17:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 172b75e1211f863600ecc65481532860 SHA-1: 6187f068795758922764a81f360d51c4665a2b24 SHA-256: 0b3e281ee388dde5619130d7fb86724623c7e441c4381b9b0fdba9196fe359f7
124 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to distribute malicious content or phish users. ClamAV detection further confirms its malicious nature, identifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

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://crysiq.ru/uplcv?utm_term=kids+doing+stupid+things PDF link annotation
    • http://naturalmis.com/userfiles/file/jexibanisotosebaz.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f62de484dd---tejusosojolif.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/72288710417.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab864aa9ad4---32431327416.pdfIn PDF document text
    • https://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/814266fba6c479aaee2b925a6eb430fb/44988779148.pdfIn PDF document text
    • https://eravukappalpalli.com/userfiles/file/muwulegebunabiduxejasuk.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/9f76998c6b2f59042b5db5e4c927c276/29813075875.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4888c27de---59428181828.pdfIn PDF document text
    • https://shibbirs.com/media/files/23587744019.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a1539b4d4c9---xinivanunepitamonu.pdfIn PDF document text
    • http://laboratoriodiprogettazione-ve.it/userfiles/files/71756335590.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a4067e73463109cf5892ebeefcc4d0e3/62378432462.pdfIn PDF document text
    • http://print-printonline.com/ckfinder/userfiles/files/39808785115.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/g3t4bb5pt58bagmcop8hnuu1p1/xoxenekofo.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1ce6d4f9f9---lurosor.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074c0980bcb4---sesejageguwovepazug.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160795e405c838---87894729883.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06fd0639b9---83718682615.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/nuvokigiworifununama.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/ddsau23lqepum3jg4qav0neh37/22063479311.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/visezi.pdfIn PDF document text
    • https://catequesisnavarra.org/guiarte_userfiles/files/tidumalafomuve.pdfIn PDF document text
    • http://chanakyaaerospacedefence.com/userfiles/file/ralufidojosa.pdfIn PDF document text
    • https://pypconsultores.mx/userfiles/file/9700022371.pdfIn PDF document text

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