Malicious PDF — malware analysis report

Static analysis result for SHA-256 5124ff21256f8938…

MALICIOUS

PDF

72.7 KB Created: 2021-03-28 14:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f6de0e165da03e47f0476766d3a78738 SHA-1: 1f45ab6aad1e0c514f2a6e698b15a4f226c7d193 SHA-256: 5124ff21256f893877db3db749ea4efbc771a51c6de2f526110b4def7cb35437
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The embedded URL 'https://zajinet.ru/wix?keyword=vt+google+mail+login' strongly suggests a phishing attempt targeting Google Mail credentials. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate it's designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/wix?keyword=vt+google+mail+login PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366676/normal_6005056ea0417.pdfIn PDF document text
    • http://fatutidajipen.iblogger.org/blue_book_car_value_guide.pdfIn PDF document text
    • http://islta.fun/tikemevetebofojej83tds.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450864/normal_603a47656b896.pdfIn PDF document text
    • http://kusulapezep.iblogger.org/35136643023.pdfIn PDF document text
    • http://sukovuxelex.22web.org/gozaraxemetusaparo.pdfIn PDF document text
    • http://zikuwojanubeg.iblogger.org/wigomezolarawul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456660/normal_5fe7c9d3dd61d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490132/normal_6041ddd148d18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426413/normal_5fd368811d23a.pdfIn PDF document text
    • http://khareedforosh.com/thermos_grill_2_go_coolerlz0pc.pdfIn PDF document text
    • http://prognoz-football.club/addicting_games_impossible_quiz_answersvftob.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/paxunu/cultural_nationalism_apush.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/how_to_fix_lg_fridge_water_leak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14baa4da-4ce4-4943-9e87-130bbec7f7d3/jolalareparimo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c578723-27c7-42b7-93d2-388f87d57aa3/pimavekudedovovapapakev.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/67243881794.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/sony_video_cassette_recorder_slv-_n750_manual.pdfIn PDF document text
    • http://nakepusigazu.epizy.com/free_printable_blend_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/que_significan_las_bolitas_del_rosario.pdfIn PDF document text
    • http://start.google.vt.edu/In 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_off0000dea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA8 4696 bytes
SHA-256: f2af1a3be41145a79ba88507362010531a22e90204ce922a05f447b0f3e8fff1
font_01_sfnt_off0000ee93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE93 11408 bytes
SHA-256: edf6f1a2912e986fd778f235b44b0abda4d9c4ae7d833cb0a3d2ea42cdd43594

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