Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaee05641b6547d0…

MALICIOUS

PDF

87.5 KB Created: 2021-05-10 22:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0bb2d183402fead982a682064d30b418 SHA-1: e183304227446f5c81ec2f4e33c5ab4c1446031f SHA-256: eaee05641b6547d00a42faea74b4524e4de347accd3d65436a05b7c687ad421a
96 Risk Score

Malware Insights

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

The PDF file contains a URL that leads to a phishing site, as indicated by the ML classifier and ClamAV detection. The document body, though heavily obfuscated, suggests a lure related to exam preparation. The presence of an external URI points towards an attempt to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=how+to+pass+ap+lit+exam+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401973/normal_60333608bb753.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454824/normal_603e312421975.pdfIn PDF document text
    • https://cdn.sqhk.co/dusivubeleza/Yjjeihv/kogumovej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380700/normal_5fcf1f9d2246e.pdfIn PDF document text
    • http://subonus.ru/wunisicau5l.pdfIn PDF document text
    • http://grigolia-studio.ru/84325157700s0nn6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415934/normal_5ff140f3c7180.pdfIn PDF document text
    • https://cdn.sqhk.co/dawajimet/mR9jfhe/junufog.pdfIn PDF document text
    • https://cdn.sqhk.co/moserusoba/8jasijU/draw_a_stickman_epic_1_free_download_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ac013b2-178a-4d56-8b27-fabcce9d8f05/sitcom_structure_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73952464-1be4-4473-a634-7239342370a2/rangers_apprentice_books.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/setswana_bible_free_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/11717749775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7628d0e-fbc0-41f2-bbd9-a228c6928907/evan_moor_corp_daily_science_grade_5_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/50231203198.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/eric_foner_give_me_liberty_chapter_15_outline.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/89016470649.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/bail_application_template_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/betupuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2994393-651d-44f4-8f2e-cd2d08e1fac5/58750815705.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da39598f-3c14-4c76-b81b-0dfc8fc9f542/salter_kitchen_scale_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/atom_bomb_hai_teri_jawani_song.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_off0001161e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1161E 5264 bytes
SHA-256: 55b6f3acbca7fdfd5746879652768774c7e1e49b0023b7b803804ca4021e9872
font_01_sfnt_off00012808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12808 12216 bytes
SHA-256: 969484d5f97bb9100f1238161355bcad7dc53befbe917b13cc1a5d3976cbead2

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