Malicious PDF — malware analysis report

Static analysis result for SHA-256 66eb802f0987fbee…

MALICIOUS

PDF

76.8 KB Created: 2021-03-22 22:02:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c8015c5d1430db2b6185e4f02cbf323f SHA-1: 3dbf0239d52108e9e743ff1d1163792772694858 SHA-256: 66eb802f0987fbee528b9e0d6ab21620778ed0ba092963d3f2670b45c904a77b
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://kuzutuzo.ru/123?utm_term=ifpi+music+consumer+insight+report+2018', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

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://kuzutuzo.ru/123?utm_term=ifpi+music+consumer+insight+report+2018 PDF link annotation
    • http://xuxikurov.mygamesonline.org/vowovigeseg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409403/normal_600d3a8a6a411.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426941/normal_604d3494126ed.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/parent_role_in_early_childhood_education.pdfIn PDF document text
    • http://saxexinonefiji.22web.org/fuzur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408188/normal_5ffce52d571dc.pdfIn PDF document text
    • http://guromufupadaf.iblogger.org/jiratixogugirina.pdfIn PDF document text
    • http://jarisudowapebi.sportsontheweb.net/merge_with_adobe_acrobat_dc.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/muwomapotumugi/pupatizezunuguvezotil.pdfIn PDF document text
    • http://widokox.rf.gd/julius_caesar_modern_english.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/carers_allowance_form_by_post.pdfIn PDF document text
    • http://bedopevidorofi.myartsonline.com/ansiedad_causas_sintomas_y_tratamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/82996590938.pdfIn PDF document text
    • http://topefanaxo.epizy.com/51340504050.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/39386018841.pdfIn PDF document text
    • http://rivenoke.onlinewebshop.net/materi_barisan_dan_deret_kelas_9.pdfIn PDF document text
    • http://xusemud.epizy.com/giralejadinej.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/lofireduduzalov.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_off0000ea3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3F 5644 bytes
SHA-256: e17da97d278ebbd41394aa945839db4b3a7556f5d4f27154b84bcf9afcabc94a
font_01_sfnt_off0000fd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5D 12816 bytes
SHA-256: 1c83243c4979ac8eb7947233c43045c716d031927c08e577444097c433d7b0b4

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