Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d51dbc41a0ff1f7…

MALICIOUS

PDF

71.4 KB Created: 2021-02-15 13:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: db39bbd0aff98e79c307e47b23e575cd SHA-1: 385e4df8c417a1c22ff4e3ab09febf4945527ba5 SHA-256: 9d51dbc41a0ff1f7fdf05dd5d17346310ce62287240b47330c383b94f0f7fe60
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wb?keyword=how%20to%20pair%20bose%20mini%20speaker%20to%20iphone PDF link annotation
    • http://zavodtriumf.com/solving_literal_equations_worksheet_answer_keyswtcn.pdfIn PDF document text
    • http://fitit.space/gumokasagarositiwue1dts.pdfIn PDF document text
    • http://stav-games.ru/77098229108axk97.pdfIn PDF document text
    • http://amsidisi.xyz/16881904607h9v6p.pdfIn PDF document text
    • http://websecurer.tech/xilolobidagasepuvoqq9fk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_60110eabd50a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385214/normal_600960044b866.pdfIn PDF document text
    • http://guvupokive.iblogger.org/anlage_vorsorgeaufwand_2015.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478393/normal_5fc9a14b35777.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/mogipegi/dowomixipovoduni.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/bozunemunogaganudakib.pdfIn PDF document text
    • http://porininiji.epizy.com/brindisi_la_traviata_partitura.pdfIn PDF document text
    • http://simumomoluj.rf.gd/66140107169.pdfIn PDF document text
    • http://jabujiwotase.epizy.com/57765864583.pdfIn PDF document text
    • http://safefimij.epizy.com/hydrogen_fuel_cell_worksheet.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_off0000da8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8D 5284 bytes
SHA-256: ce3022dcb14a6fd9425652c2e50090174bf7fc31577bfb905f211be4e3c56a49
font_01_sfnt_off0000ec5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5F 10640 bytes
SHA-256: 7f4d66b3bf41fa8390d991dafe01a7f16acc9ae011e39e6029b0412b7f288b04