Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa33d49cee4fa24…

MALICIOUS

PDF

62.9 KB Created: 2021-02-09 14:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c3feb68f65ffbfadbddc663a794e0ff1 SHA-1: 638a61347ab13c6387d5580d10e6f80d6b5bec2d SHA-256: aaa33d49cee4fa24d930c4bb3891e51a140579fba821ea836b4d3e02aa94fa6e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=game+studio+tycoon+3+apk PDF link annotation
    • http://osummer.space/wetifaregegigudavademt1bjx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451368/normal_5fdc1cd2c3f5d.pdfIn PDF document text
    • http://ributufukepun.66ghz.com/bluehost_email_server_settings_android.pdfIn PDF document text
    • http://sigonalen.22web.org/pureza_de_maria_plataforma.pdfIn PDF document text
    • http://lenudes.com/dodalibikofezodiduv33ncr.pdfIn PDF document text
    • http://toteganutiv.66ghz.com/hourly_weekly_calendar_template_excel.pdfIn PDF document text
    • http://ueuniti.xyz/administrao_do_capital_de_giro_assaf_neto_downloadjj1n2.pdfIn PDF document text
    • http://zokorut.iblogger.org/asphalt_nitro_lucky_patcher.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/jg1jblB/15208426984.pdfIn PDF document text
    • http://ziratonis.iblogger.org/56829826497.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vipaviveza.epizy.com/egyptian_cotton_bath_sheet_sets.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/dorububagusujimakukexatag.pdfIn PDF document text
    • http://xafasefulunasa.epizy.com/all_clad_induction_burner_user_manual.pdfIn PDF document text
    • http://jatuxijor.epizy.com/bopagebirifojamawuwuzaxe.pdfIn PDF document text
    • http://timonuxe.rf.gd/bostitch_multi-_mount_manual_pencil_sharpener.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_off0000b9de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DE 5452 bytes
SHA-256: d7a76ec1d192f8ec9d5b7a294942b82da31407d71918cc6c107073c059dd2be8
font_01_sfnt_off0000cc6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6E 10384 bytes
SHA-256: c680828d6feaa96b94a3317bdfa80cfda8fe56f1599d397536584293c556debf