Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c02936f38b8edd5…

MALICIOUS

PDF

79.2 KB Created: 2021-03-17 15:27:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dac5447b2dc54d2d7872b7c9d6960446 SHA-1: 9bb0ac0fab7752ef67b66bc262ded0464392d0f0 SHA-256: 7c02936f38b8edd543bd7d50ad8d714ce33ba6e72e08ebbd01c7fbbdc99e825d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/strik?utm_term=transition+words+list+for+second+graders PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417537/normal_6042a932abc21.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxamomajil/gdZRtNc/38977577986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451228/normal_60104ae9a74d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402949/normal_5ff79791ea5bf.pdfIn PDF document text
    • https://cdn.sqhk.co/musutalivun/eQjjyjb/fundidora_park_monterrey_n._l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479439/normal_6045e829b4b15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466996/normal_5feccbb6ca064.pdfIn PDF document text
    • http://lowafax.22web.org/71201366286.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476939/normal_5fed8fccee3e8.pdfIn PDF document text
    • https://cdn.sqhk.co/zibavuna/fo0S1Ud/stickman_gun_shooter_3d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wegewid.epizy.com/fogovufilurufebapanedexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3b6af36-d637-4777-a5c5-893f1e53b2e7/yunus_cengel_heat_and_mass_transfer_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc3291c-a37c-47aa-a1f9-6f99a47d3c20/college_application_checklist_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfc01cef-63d7-43c9-9f2e-bacba233a96e/velocity_vs_time_graph_total_displacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85fb2d06-71dd-4570-815b-9cf1343dd45a/harley_davidson_touring_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d51f25c-11b6-417b-b860-880fdc021d7f/54090865355.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/932cae39-cacc-4f5b-bb05-67b9e4d38e3b/fazipuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e19354ec-43f3-45f4-be2f-78d364128dc0/24620477260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a930f7b0-0703-4c33-b36e-6684200735dc/madden_mobile_hack_no_survey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca708fa6-7401-4018-81a3-39add202d4de/juxan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ced88b11-5e61-4575-96dd-05415e8917cf/basketball_dribbling_drills_for_middle_school_pe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF906 5228 bytes
SHA-256: 6fc2d43e60c870f9c5e23d67dede259e208d06a75d67d0a322d7e2d77ca1d582
font_01_sfnt_off00010aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AED 10604 bytes
SHA-256: 4327874ead518fb24397a46e83a11696cbb1aedc7f0f463de8e7c60b5664bc2e

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