Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b356ce583de4896…

MALICIOUS

PDF

59.4 KB Created: 2021-08-17 12:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 047ec8141d2245d61b65ec033e0e4a18 SHA-1: d3030f0f1181acb1bfd0fbf97c884f97d0528200 SHA-256: 9b356ce583de4896af045e333dee81c4283c60a92d8359e8ad89fba91f5d6ecb
154 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated maliciousness. It contains a link farm with multiple URLs pointing to potentially compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of these links and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7116

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 http://raylutickenterprises.com/userfiles/files/vizujebojesakujofag.pdf In PDF document text
    • https://ienter.bg/files/gumibagisu.pdfIn PDF document text
    • http://xn--aknmedcal-wpbe.com/uploads/file/77993082592.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/42d7fca0226b2291711c4b03b139bc60/26070767700.pdfIn PDF document text
    • http://costanzolegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/walexudurubazezojezizad.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/2bf9be7f599e23f2700373cc666fa3f6/boxubufekiloma.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609879808ded6---54043730143.pdfIn PDF document text
    • http://allycatering.com/userfiles/26911267966.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/eo54q7dibc9b7rlcjct0s1u76c/94350357474.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+to+get+equivalence+point+from+titration+curvePDF link annotation

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