Malicious PDF — malware analysis report

Static analysis result for SHA-256 730de0c8ba183a4d…

MALICIOUS

PDF

104.5 KB Created: 2021-03-31 23:14:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 634c3ccfc51c35914ab9ca598cbae679 SHA-1: 8457a213954e355d6a6580017881fbae79bbcb01 SHA-256: 730de0c8ba183a4ddaededefcbd83e9ae8d7956bf9f75a3600d8d6ff59b02c38
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://mezovuduw.ru/wix?keyword=royal+envoy+campaign+for+the+crown+level+59, is likely used to deliver a secondary payload. The presence of a visual download button heuristic further supports the phishing lure attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://mezovuduw.ru/wix?keyword=royal+envoy+campaign+for+the+crown+level+59
    • http://sawemawe.mywebcommunity.org/47163531419.pdf
    • http://fuwijumazawad.mywebcommunity.org/lazazitukevomitirafe.pdf
    • https://cdn-cms.f-static.net/uploads/4419225/normal_6041489134f3f.pdf
    • http://vowitufafuzebil.scienceontheweb.net/musuza.pdf
    • https://cdn-cms.f-static.net/uploads/4501037/normal_5fe7da8667c5a.pdf
    • https://static.s123-cdn-static.com/uploads/4416923/normal_5feb26aea27a5.pdf
    • http://takipibimaxubov.sportsontheweb.net/163954244.pdf
    • http://xevusezes.medianewsonline.com/painting_classes_near_me_for_toddlers.pdf
    • https://cdn-cms.f-static.net/uploads/4380858/normal_602899502f3d1.pdf
    • http://lalikexitaxixix.getenjoyment.net/divx_converter_10.8.7_serial_number.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nezugetojuf.myartsonline.com/area_and_perimeter_of_a_circle_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/4dd1172d-3069-4146-a902-f31caef6b962/bob_stroller_air_pump.pdf
    • https://c20a02f1-eded-46de-afbf-2d7328e03b26.filesusr.com/ugd/c6fd25_8cbb72f5b3584611bdd4d6b73a53728c.pdf?index=true
    • https://bfb79b04-db4d-4c54-a74a-4733ff68ceb9.filesusr.com/ugd/11291b_436d6f2550a54ebb93895e177466dc90.pdf?index=true
    • https://5da1c7d8-01c4-4175-bbf8-c25915566394.filesusr.com/ugd/1084fb_89ae9d27f0e041c686abb11acdbeb56d.pdf?index=true
    • https://8fc1c2d6-49ba-4d63-8b95-0327ef2b1627.filesusr.com/ugd/1849a1_59b928c1395f45cba9cda679122c15d0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/087df31f-c7b2-43b4-9224-ccc587a487a8/58141467613.pdf
    • https://uploads.strikinglycdn.com/files/9a9d71ca-4922-490e-b47a-86f7f0586c29/navipoze.pdf
    • https://uploads.strikinglycdn.com/files/ea2ab366-f8c0-4914-85ab-da79741a8ebb/76406724985.pdf
    • http://keregimuw.onlinewebshop.net/air_force_x_group_previous_year_question_paper.pdf
    • http://dijuvunote.onlinewebshop.net/tejazupepegamofe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015bde.bin
cac9d1239bd87570a1d618b132b8713735167cb7d6b9bce25623906a2a7533ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BDE 5792 bytes
font_01_sfnt_off00016f9c.bin
cebbc92597f5ad784dc20938294f18c584343ce2cea500fb7b279f2a7f964929		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16F9C 10576 bytes

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