Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d1556f5458fe90…

MALICIOUS

PDF

76.0 KB Created: 2021-03-08 21:50:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88883e65b5840d85625fe39767ffb57c SHA-1: e8c54cb0fcb29064b097d628dd39fec68292aa83 SHA-256: 96d1556f5458fe90c3be030f687270d94b1e13f915eb61398972aea056208189
96 Risk Score

Malware Insights

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

The PDF file contains a URL that mimics a search result for educational material, likely a lure to trick users into downloading a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to lead the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://ponafet.ru/wix?keyword=7th+grade+life+science+study+guide+pdf
    • https://cdn-cms.f-static.net/uploads/4377098/normal_601469139fa8e.pdf
    • https://static.s123-cdn-static.com/uploads/4500417/normal_5ffd6ad7de148.pdf
    • http://wutoxurusot.iblogger.org/83177379187.pdf
    • https://cdn.sqhk.co/kominepoli/hfiiaz6/capital_fund_1_online_payment.pdf
    • https://cdn.sqhk.co/gaxomawelej/oDmnHib/bill_callahan_too_many_birds_lyrics_meaning.pdf
    • https://cdn-cms.f-static.net/uploads/4418987/normal_600c9de72573a.pdf
    • https://cdn-cms.f-static.net/uploads/4473049/normal_60464e0872ba0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pumovumibabir.epizy.com/wenakediziduli.pdf
    • http://nesitojogosew.epizy.com/bojamifafokisu.pdf
    • http://nabifasilazug.rf.gd/what_is_categorical_syllogism.pdf
    • http://juwemijawikipo.epizy.com/firanarawen.pdf
    • https://uploads.strikinglycdn.com/files/8deb228f-03ee-4092-b919-ec5476609db7/sebutkan_47_proses_project_management_dalam_bahasa_inggris.pdf
    • http://zevinabimiw.epizy.com/volleyball_6-_2_rotation_sheet.pdf
    • https://39c10a3a-92c6-412a-a1bb-b8a1fc48fbc4.filesusr.com/ugd/259099_f8658c5e870945158422aac1c2efc9dd.pdf?index=true
    • https://uploads.strikinglycdn.com/files/08cc5562-269f-42d6-b757-61807d22d117/how_to_evaluate_strategic_planning_process.pdf
    • https://5e024257-ca51-40df-b6b5-a3104c7b7124.filesusr.com/ugd/97368a_d788ea3cccdb49d091479ae65378f3d3.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b30ff64b-abb0-45fa-8a2c-f265ef579ce2/five_dysfunctions_of_a_team_free_download.pdf
    • https://9df6fdd8-df71-43fb-87ad-b121b2de7416.filesusr.com/ugd/e0d0cf_542682fdca914df093c30b2903a588af.pdf?index=true
    • https://uploads.strikinglycdn.com/files/989aac95-afb1-4162-af3f-ec24738ca714/sinister_6.4_egr_delete_instructions.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_off0000ed03.bin
d61473d66905a79c667ee7dff7c02287786201d990a90b6a248b947d40e7d2e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xED03 5504 bytes
font_01_sfnt_off0000ffc5.bin
005014d60872420e3d7ce79b0755e30711f11743f2c5dbb56a861d6c880d5937
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC5 10288 bytes