Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee8e61178e73e29…

MALICIOUS

PDF

66.5 KB Created: 2021-03-13 14:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4a305f21295a567a21c6ed8ee86e67b3 SHA-1: 18b1acb11e42bbf84e6fcadbc73eb6ae4dc83c24 SHA-256: 8ee8e61178e73e295a375f8c658e77a1d7ab08416663a96e2d737e28ea8185b6
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded URLs and heuristics indicate it functions as a link farm on disposable hosting, redirecting to potentially malicious sites. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or trojan delivery attempt. The document body, though heavily obfuscated, contains references to 'keto diet grocery list and meal plan pdf' and 'wkhtmltopdf', indicating a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4149

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/award?keyword=keto+diet+grocery+list+and+meal+plan+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4527902/normal_5fc9bcebde740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462374/normal_60257cc6b23f5.pdfIn PDF document text
    • http://creditreportus.info/clover_pos_system_cost5ns16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404514/normal_60464c62ba494.pdfIn PDF document text
    • http://losinglotterynumbers.com/cheat_to_skip_a_mission_in_gta_san_andreasimte7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391620/normal_5fe145004c5de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483349/normal_5ff5e39e84689.pdfIn PDF document text
    • http://filemarker.store/du_academic_calendar_2019yhyg0.pdfIn PDF document text
    • http://segwaywheelchair.ru/introduction_to_trigonometry_notesy8n0b.pdfIn PDF document text
    • http://baltika-trans.com/autodesk_revit_2020_contentskuzq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417648/normal_601a7b04e4178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465270/normal_5fd13d49f40c8.pdfIn PDF document text
    • https://22fea36a-5e19-4af1-b4aa-fe6e1efe0ee9.filesusr.com/ugd/b5a188_7ac631c7165947429b6694d157e848db.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e50686c-a49d-4a0d-943b-c1377994bc48/13117056131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e09fa379-a09c-4721-a9f0-204a981c2173/how_to_reset_rca_galileo_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18d541f0-fbba-4fa4-ba65-751d99211780/roxaxiguxagisamaroj.pdfIn PDF document text
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_c0c33212e8ff40169557b45fcbfcb3d0.pdf?index=trueIn PDF document text
    • https://a4346b84-4611-49ab-b113-80c9188ca613.filesusr.com/ugd/078c79_71811d1863194c1386fa60df404bf2c9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/73906b32-8298-410e-aea9-08a90138d41d/nurivenapamojipaliwifano.pdfIn PDF document text
    • https://ede8a7a3-2377-4e09-926a-401222b31c25.filesusr.com/ugd/81c89d_9426a90abb864507a8f7c61b6b42f09f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb3c1210-baf4-47b5-9d74-1c799efe58b3/30118977212.pdfIn PDF document text
    • https://8964868a-aef6-4da0-9a9b-29de7c28e0c5.filesusr.com/ugd/b910ae_28326e06210748bc93b43d45f70bf9e1.pdf?index=trueIn PDF document text
    • https://5b0e1d79-1acc-45ba-a965-31015372eee8.filesusr.com/ugd/67f5f7_c9cd1280620747d4957e742d58aa2bd8.pdf?index=trueIn PDF document text
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_7bfb45dd8627405fa00ab1063f463a8a.pdf?index=trueIn PDF document text
    • https://4adff18d-dc39-4349-be2c-eeb12737f1cb.filesusr.com/ugd/9117e0_5de09e4810084d0c9b15820c42761be9.pdf?index=trueIn PDF document text
    • https://a1359116-1358-4cde-afc5-3600b4bb50db.filesusr.com/ugd/3b0c81_c1d804442df6440ba61ec230f18c52ba.pdf?index=trueIn PDF document text

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