Malicious PDF — malware analysis report

Static analysis result for SHA-256 b57e1f6d3bdc765f…

MALICIOUS

PDF

98.9 KB Created: 2021-04-20 05:36:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 048effa22ed4935a77abc8a92dcd7490 SHA-1: d4571f2b202a2594db95a57236fa6e63072e19f3 SHA-256: b57e1f6d3bdc765f0094b1cef67bc1bee8136202e655b4a1418ba73d0e7042a6
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 0.9993

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://botokaw.ru/strik?utm_term=stairway+to+heaven+lyrics+youtube PDF link annotation
    • https://cdn.sqhk.co/nadetajagupe/wghhdIe/strike_force_kitty_unblocked_games_77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386361/normal_6050cc8b5853f.pdfIn PDF document text
    • https://cdn.sqhk.co/jalixuwefes/jcjbigt/addition_worksheets_for_grade_2.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/linux_admin_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/geGjoJm/craftsman_snowblower_carburetor.pdfIn PDF document text
    • http://jijomaj.getenjoyment.net/78308973417.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504839/normal_5ff3d32d05f1f.pdfIn PDF document text
    • https://cdn.sqhk.co/libibajuzumu/GifZiid/63422426410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453528/normal_6047f6259409b.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/62181642626.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494877/normal_5ff8f871626cd.pdfIn PDF document text
    • http://garobunatuxovi.scienceontheweb.net/can_i_send_used_clothes_to_mexico.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410190/normal_5fe460c1a6c3b.pdfIn PDF document text
    • http://dofoziteda.iblogger.org/bond_energy_calculations_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/zafazegig/Tdhhidx/vepesaxedibabixi.pdfIn PDF document text
    • http://pawezujexas.mywebcommunity.org/the_duchess_of_malfi_as_a_revenge_tragedy.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/dikobepibelun/84860561490.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/stress_and_academic_performance_questionnaire.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/aha_lipid_guidelines_2017.pdfIn PDF document text
    • http://jefokid.rf.gd/36514118941.pdfIn PDF document text
    • http://telusomabufa.onlinewebshop.net/bactrocera_cucurbitae_life_cycle.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/howard_gardner_multiple_intelligences_download.pdfIn PDF document text
    • http://punotonaduwize.atwebpages.com/lasev.pdfIn PDF document text
    • http://duvodix.myartsonline.com/gokip.pdfIn PDF document text
    • http://jowokepo.atwebpages.com/livro_administrao_pblica_municipal.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_off000143d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143D1 5384 bytes
SHA-256: d1f1659a07527c39d8670dd0eed44f6b8cb782bd8f0fd17d72e01e824298ca24
font_01_sfnt_off00015638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15638 11708 bytes
SHA-256: 6491409d44dbe562a02733bce0cb0fc5e77eeb8631f82206a8712cd8d2668457

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