Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d19ac5449fa3aeb…

MALICIOUS

PDF

77.3 KB Created: 2021-03-22 22:25:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: fb8d234ae3f9cd8355bbada17a45af45 SHA-1: 448be06330d9afcfb2f4cbdc452d7884447d0383 SHA-256: 6d19ac5449fa3aeb9706fb49486229a856672d4d0294499f200c32480dd65768
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL disguised as a search result for 'english grammar rules tenses pdf'. This URL, https://mezovuduw.ru/wix?keyword=english+grammar+rules+tenses+pdf, likely leads to a phishing or malware download page. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/wix?keyword=english+grammar+rules+tenses+pdf PDF link annotation
    • http://zupanito.iblogger.org/crystal_report_viewer_logon_failed_error.pdfIn PDF document text
    • https://giduzuzetedeze.weebly.com/uploads/1/3/4/8/134853145/51d1d24d354.pdfIn PDF document text
    • http://dsv-trening.ru/zunojinepizamepavitunistkjy4.pdfIn PDF document text
    • https://pigegiwoxare.weebly.com/uploads/1/3/5/3/135385020/nexapap.pdfIn PDF document text
    • http://obsluzhivanie-kompyuterov.moscow/48355715994qcgmw.pdfIn PDF document text
    • https://gisidamuxifa.weebly.com/uploads/1/3/0/7/130775495/totuz.pdfIn PDF document text
    • https://vebafuxitupum.weebly.com/uploads/1/3/4/8/134890404/8210917.pdfIn PDF document text
    • https://gaditefu.weebly.com/uploads/1/3/2/7/132712385/mibigibepitugejubemu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://favuwipeg.rf.gd/maravufilenegefozaz.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/xulivijadolanetufekifowoz.pdfIn PDF document text
    • http://dijovomivuz.rf.gd/77143556815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/793068d1-906e-426b-8b0c-a63b77ee0a28/best_software_to_learn_english_vocabulary.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/dragon_age_origins_rogue_specializations_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91141f87-40b6-4fbf-a713-4b9cc9d99fef/52217560801.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/62874359804.pdfIn PDF document text
    • http://dapuzuro.epizy.com/28747508910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/949524c1-5096-4de2-81d0-f03fd563abc1/numefivuxigawogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ac4e84-e418-481c-9860-8772b6a3a748/sebupo.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/47496676891.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE290 5184 bytes
SHA-256: b8504f632da277a28b4b7b9fc87048b45681c0e20025a6e5306a2201de8a7734
font_01_sfnt_off0000f3fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FD 10672 bytes
SHA-256: 85c7daba38239469179f682c898278a4315745b615bf2c6b205af098e36c0a3b
font_02_sfnt_off00011867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11867 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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