Malicious PDF — malware analysis report

Static analysis result for SHA-256 d57ca8194ea2a36e…

MALICIOUS

PDF

153.3 KB Created: 2020-11-27 06:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0c2edc5d018a4c6e5f2eed1d6568057b SHA-1: b30d7ba2810f1429b2500c3537434a2dee2fd45c SHA-256: d57ca8194ea2a36e5c8a07321aa72186d93dfe0c7c99e1d4827e2480fefb98a6
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 0.9998

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafficel.ru/strik?utm_term=uc+berkeley+law+notable+alumni PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5f919a23bb639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416671/normal_5fb868b0aedfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502511/normal_5fc025c88873e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370264/normal_5fb4c1a7c992f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sazixipame/unblocked_music_sites_at_school_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/fun_language_arts_worksheets_for_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/ruxuvarukenimiweno.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/xikep.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/visual_bcd_editor_portable.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/13237999788.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/agilepm_agile_project_management_handbook_v2.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/pokmon_battle_revolution_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/quarterly_science_benchmark_assessment_answers_biology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9736d8fa-90e8-4cfe-a229-8de92bdf1595/97289036432.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_off00021e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21E58 5156 bytes
SHA-256: 35217861190b04ef6591d8083be75211338a1e5e489c1af577d98b6e3126a324
font_01_sfnt_off00022ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22FF0 12084 bytes
SHA-256: d89ad8c34f4d6e2601baa3d805b067d55ff0f242c9da6f1731ffdb350f6e30c3

Open this report in the interactive analyzer, or submit your own file for analysis.