Malicious PDF — malware analysis report

Static analysis result for SHA-256 9833c7a4e530bd24…

MALICIOUS

PDF

71.7 KB Created: 2021-03-01 19:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4bf0e53bc92e135f62eeeb97d65823c8 SHA-1: a533b760429f2c665285c15452df46c2984a77af SHA-256: 9833c7a4e530bd24dd5edb33fe6ed76b528970e8267eeae83b9695d07cd4e5ea
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/wix?keyword=which+liquid+dissolves+pills+the+fastest PDF link annotation
    • https://dikarofojosej.weebly.com/uploads/1/3/3/9/133988548/43e984cff.pdfIn PDF document text
    • https://depasosuva.weebly.com/uploads/1/3/4/4/134483816/ranuxeremebanowos.pdfIn PDF document text
    • https://wexabegolorumad.weebly.com/uploads/1/3/4/3/134351445/nexiwis-mujuponoxotifer-sobozudoka.pdfIn PDF document text
    • https://jovonawokemurif.weebly.com/uploads/1/3/4/6/134678447/mujopajeja.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/bubozuka-jegibotez-bodipawamik-widixenam.pdfIn PDF document text
    • https://pedidifapa.weebly.com/uploads/1/3/0/8/130874671/bigobesonesikilese.pdfIn PDF document text
    • https://rasuvore.weebly.com/uploads/1/3/4/5/134523398/790734.pdfIn PDF document text
    • https://gulurevipad.weebly.com/uploads/1/3/5/3/135349864/musaredoda-dutire-ferejafukala.pdfIn PDF document text
    • http://pimuxiv.22web.org/greenwell_point_bowling_club_annual_report.pdfIn PDF document text
    • https://labuxodapiju.weebly.com/uploads/1/3/4/4/134492440/xovotepuzo.pdfIn PDF document text
    • https://rilulukopidu.weebly.com/uploads/1/3/5/3/135323077/xilifun.pdfIn PDF document text
    • https://migobagola.weebly.com/uploads/1/3/4/8/134874333/gowilu-vunopoposirunag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387036/normal_6016fc51d8234.pdfIn PDF document text
    • https://xidozuju.weebly.com/uploads/1/3/4/5/134597445/rivav.pdfIn PDF document text
    • https://bubafoxir.weebly.com/uploads/1/3/0/8/130874260/rapejefizesakej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_6030a5d367ea5.pdfIn PDF document text
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/jebad.pdfIn PDF document text
    • https://tazabavirivagi.weebly.com/uploads/1/3/0/8/130814173/bb9ae.pdfIn PDF document text
    • http://nagonakog.22web.org/printable_adjective_worksheets_6th_grade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368486/normal_5fcedc56bfdac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC53 5348 bytes
SHA-256: cd8b119b92d192206fd6cf42f7360aaf899a5e34c9077f41979266588ef18f60
font_01_sfnt_off0000ee9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9A 10272 bytes
SHA-256: c2f7d560358e72fe6f1f1a1d093c21b2d92a3147eb3e282f6b63871e3ce58d75

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