Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7aeaabae548d33…

MALICIOUS

PDF

73.0 KB Created: 2021-02-13 03:02:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0c9249061cf08bf18a0fa458ca38dcb1 SHA-1: 109bf7225a055aec23397867376a371d3de7d889 SHA-256: 4d7aeaabae548d33582ccb4e1e57d6d579562ef769221ea5709a087ee481d3dd
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/wix?keyword=diabetes+quotes+from+doctors PDF link annotation
    • https://cdn.sqhk.co/zimopiroxab/H0rhchi/terurimamatobarusam.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/tozixu_loniguzopomolo_rubabetalivoti.pdfIn PDF document text
    • http://jikalananigopun.iblogger.org/poetic_form_abababcc.pdfIn PDF document text
    • https://cdn.sqhk.co/satofurijob/jihdtjg/walking_dead_zombie_girl.pdfIn PDF document text
    • http://mekozeka.66ghz.com/wedding_reception_timeline_template_word.pdfIn PDF document text
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/wodixovedowawepid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411252/normal_5fcf12a4c4594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450640/normal_6022c38b8ec05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420432/normal_5ff458986f7f7.pdfIn PDF document text
    • https://cdn.sqhk.co/jetuzama/hjgf3hg/35339325445.pdfIn PDF document text
    • http://specrazreshenie.com/initial_sounds_worksheets_for_preschoolugzvg.pdfIn PDF document text
    • https://tawisowa.weebly.com/uploads/1/3/5/3/135315305/vafonogil.pdfIn PDF document text
    • http://nozijepirag.22web.org/wuvegobuxarevitotag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458144/normal_600e4be039d08.pdfIn PDF document text
    • http://womans30planet.com/facebook_lite_update_appspu2vu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jofosomorigifo.rf.gd/latest_bittorrent_filehippo.pdfIn PDF document text
    • http://fadowudi.rf.gd/pre_marriage_counseling_certificate_template_free.pdfIn PDF document text
    • http://poradenojipedu.rf.gd/digadidaduxef.pdfIn PDF document text
    • http://zewebuguv.epizy.com/38742066653.pdfIn PDF document text
    • http://vulofuza.epizy.com/annual_report_pt_indofood_cbp_sukses_makmur.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_off0000dd7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7D 5400 bytes
SHA-256: b856f1b948731d7b19809685b381c63353069767e1c775960e6a85e46ea7cc7a
font_01_sfnt_off0000efc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC2 11024 bytes
SHA-256: a4fe8be5f6f027a58c0d9d2e19d325c0b1950fdb655cf76499ef740b26d8b865

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