Malicious PDF — malware analysis report

Static analysis result for SHA-256 803b8f46f7371145…

MALICIOUS

PDF

75.2 KB Created: 2021-02-17 15:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 416469fc886a31bb35171b59ee8bd068 SHA-1: 41e048eaad0f20d74eff44f92baed589a516190b SHA-256: 803b8f46f73711459ce13db11ffe951465f3b6c601e930b5e6c2e477f7af9e8c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jottigo.ru/123?utm_term=how+to+write+a+faith+statement PDF link annotation
    • https://cdn.sqhk.co/feguzuvubut/ieyifha/overkill_3_mod_apk_1._4_5.pdfIn PDF document text
    • http://sigorododosub.iblogger.org/bookworm_adventures_3_free_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/zubuwebofe/eKqghhJ/litujebigetep.pdfIn PDF document text
    • https://cdn.sqhk.co/jomenuluz/jjjhhcV/gofupub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447265/normal_5fd3950304a9c.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/cEhf3ie/ritanefoze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376850/normal_5ff5b61c7d848.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446162/normal_5ffb119363c40.pdfIn PDF document text
    • http://nutosolawuxa.iblogger.org/blackberry_classic_firmware.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/wanalovum/88263397203.pdfIn PDF document text
    • http://jidifulake.epizy.com/2613893380.pdfIn PDF document text
    • http://ribaxekag.epizy.com/qualitative_research_on_bullying_in_schools.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/exam_datesheet_of_class_10_2020.pdfIn PDF document text
    • http://pofutujasex.rf.gd/zipikapuxafag.pdfIn PDF document text
    • http://binasizula.rf.gd/54871429671.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/income_tax_and_national_insurance_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/whirlpool_thin_twin_heavy_duty_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/autodesk_app_2018.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_off0000eabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABB 5028 bytes
SHA-256: 0792e4b1b62a6889f076bff3eeaa5d5ff1320f0435018858629e8d157ac74bed
font_01_sfnt_off0000fbba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBA 10176 bytes
SHA-256: 0d93f368b838dfa289c8c8b4b691c665fe1fc8c0ae515b67b1a90b1f74ea3bc8