Malicious PDF — malware analysis report

Static analysis result for SHA-256 cace35901e3220a0…

MALICIOUS

PDF

72.5 KB Created: 2021-02-25 02:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 259756d803edb29b1fda581be1e338c9 SHA-1: ba6425e09464e978312fe7d5ec09ea69ef6e5fee SHA-256: cace35901e3220a0f719fb385b1fc1c04335cd22917ac349efeb505fab310832
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://seumenha.ru/award?keyword=what+are+the+eight+major+biomes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424036/normal_602be36d2eefa.pdfIn PDF document text
    • https://cdn.sqhk.co/zofonabiz/iaAH6E4/34316769644.pdfIn PDF document text
    • https://cdn.sqhk.co/mikevoponage/iihadih/40772790122.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/jfNNjgQ/mubokowudibux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_601a6428c4e5f.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/23005231930.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408589/normal_5ff3d2ab5ee27.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/girard_tankless_water_heater_problems.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/26637737268.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/toxower.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/71861305513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456128/normal_60127ea61ec3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zufonokimilije.epizy.com/open_chegg_answers_free.pdfIn PDF document text
    • http://pidezesu.rf.gd/aasm_narcolepsy_treatment_guidelines.pdfIn PDF document text
    • http://dipijiz.epizy.com/54738416162.pdfIn PDF document text
    • http://woxepakaj.epizy.com/atp-_adp_cycle_worksheet.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/ps_form_3602-ez_fillable.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/joniva.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_off0000e089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE089 5296 bytes
SHA-256: b3e99fcded9d09a7c168fd108b58af3c6917b2bdf0d221cf53ff1f19117aeb05
font_01_sfnt_off0000f275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF275 10032 bytes
SHA-256: 2869c2f03b4828c299847aedf644623ece43448c384b86d05584a2527df50976