Malicious PDF — malware analysis report

Static analysis result for SHA-256 78db1fcfb67beefd…

MALICIOUS

PDF

80.6 KB Created: 2021-04-04 00:16:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7960d832f44b018bb11169d68fb4d1f9 SHA-1: 80abc46e94038bc88eb6e2b45562bb36db4d8b2e SHA-256: 78db1fcfb67beefd59563ca842f72b691a03809a7c01ada16bcfb791cd81b307
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/strik?utm_term=personal+statement+of+christian+faith+sample PDF link annotation
    • http://gepexoliv.medianewsonline.com/discrete_mathematical_structures_4th_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393647/normal_601e344fbb4cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413454/normal_5ff27fe394f73.pdfIn PDF document text
    • http://rollernefritmassage.xyz/99733100603wvpxh.pdfIn PDF document text
    • http://lawexape.mygamesonline.org/accounting_standards_summary.pdfIn PDF document text
    • http://forajadafogaxuv.medianewsonline.com/lacour_saxophone_etudes.pdfIn PDF document text
    • http://bluebadgeform.com/32110959225x1dgp.pdfIn PDF document text
    • http://afracheat8.xyz/stock_market_news_today_youtubeksciw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421050/normal_602f7ab8d5432.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446045/normal_604ca4cacdbbb.pdfIn PDF document text
    • http://ladebizelase.scienceontheweb.net/old_man_and_the_sea_full_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477367/normal_60549f0e0b122.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/davawina/outback_aricanduva_formas_de_pagamento.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/calories_in_taco_bell_bacon_crunchwrap.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/how_many_sides_does_a_polygon_have_with_an_interior_angle_of_1800.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/82587127147.pdfIn PDF document text
    • http://jozilaro.atwebpages.com/kizepalegirafi.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/energy_transformation_worksheet_6th_grade_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/20124804416.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/john_lewis_egyptian_cotton_sheets_200.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/bihar_masti_bhojpuri_gana_2019_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/consonant_sounds_worksheets_kindergarten.pdfIn PDF document text
    • http://fazovalekotevo.onlinewebshop.net/the_warded_man_free_download.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_off0000fc6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6B 5256 bytes
SHA-256: 8661d410322d01ad1c83447e3913f500d6e449b8fd03e96ff89b5d64451ce522
font_01_sfnt_off00010e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E22 11348 bytes
SHA-256: bfd60d9c0b40cd85358559bfcd7fbfc56f7573560a8366ae93e23a2a2a6406be

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