Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c31b05cd7b3841…

MALICIOUS

PDF

72.6 KB Created: 2021-02-15 04:56:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 408314794866597a4266dc0323364cdf SHA-1: 98afc500c1535de544d5e3e3ce90b17ddb7a94e0 SHA-256: 97c31b05cd7b384115cd711f57eb7e064f80c473c24580b8ba2afa967386391c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/wix?keyword=lake+okeechobee+level+2019 PDF link annotation
    • http://wordsideget.top/humanity_bureau_imdb_parents_guide08g1p.pdfIn PDF document text
    • https://ritukananikunid.weebly.com/uploads/1/3/0/9/130969552/89dcdefa.pdfIn PDF document text
    • http://mmmuuuue.space/tiktok_mashup_clean_october_2020xgcbe.pdfIn PDF document text
    • http://bigno.space/dukunojijutodadap8mui.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373281/normal_6011e29804961.pdfIn PDF document text
    • http://insitemonitoring.com/1847267821r82nb.pdfIn PDF document text
    • http://smotrikino.fun/demaxafulusepazofelipoxexeh0o5.pdfIn PDF document text
    • http://tomandbxof.site/short_film_ideas_for_school8hq8o.pdfIn PDF document text
    • http://whalesqpa.fun/customary_measurements_worksheets5yxt5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416514/normal_6019ca6e0418a.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/SQuiagc/blood_pressure_monitor_app_for_android.pdfIn PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/533106e0cbe.pdfIn PDF document text
    • http://boxberry-24.cc/86806228705pqm9h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472185/normal_6029cd9cd47fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445115/normal_600b73febafac.pdfIn PDF document text
    • http://izzzaaa.space/pandas_for_data_science_cheat_sheet7wx4j.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/dufekifaral/guilty_gear_x2_ost.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/socrates_apology_by_plato.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/eight_days_a_week_1997_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/17299299594.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/75964663027.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_off0000def5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF5 5300 bytes
SHA-256: 0648a886d3d6466c358d73721e4ecba88d3450b9f1676e4aae7b9d95603246ae
font_01_sfnt_off0000f10d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10D 10648 bytes
SHA-256: 7fce7d11e40276662621287d65edb194261d7c3b3313e0a7f62133e62f178489

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