Malicious PDF — malware analysis report

Static analysis result for SHA-256 bafb2245aeb9c072…

MALICIOUS

PDF

71.6 KB Created: 2021-02-11 14:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7f388eafccad8411b54aaf94f466c77c SHA-1: e9cbb913425c229359f215f1f6c64a1af6df7dca SHA-256: bafb2245aeb9c07281f8ac7c4496e2a862ce7f5df1ede1b9e6ececb0a9c7e5fe
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=divergent+plate+boundaries+transform+examples PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482625/normal_60251b1c21798.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5fdc87814e223.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460982/normal_600ecfc28d823.pdfIn PDF document text
    • https://cdn.sqhk.co/gegojagakexu/oOgdiaE/pitzmaker_mod_apk_1._4._8.pdfIn PDF document text
    • http://zewegirugiputix.22web.org/gomukh_trek_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jebixusugak/hagdjfc/65623779342.pdfIn PDF document text
    • https://cdn.sqhk.co/mojafefegamo/liahaDo/furniture_city_wardrobes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425924/normal_5fc72944b32fc.pdfIn PDF document text
    • https://cdn.sqhk.co/wiluxuko/oiiTogh/todiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403556/normal_5ff3c4e495369.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374185/normal_5fdf27d109039.pdfIn PDF document text
    • https://cdn.sqhk.co/fodibaniwe/hhIQALV/kawovajevurimujowinogeli.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/jnV0Ujc/sisezegafapufosave.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366385/normal_5ff4cfa6c25f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pemukusa.epizy.com/migosedalikerejego.pdfIn PDF document text
    • http://fegozovot.rf.gd/numedog.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/pakox.pdfIn PDF document text
    • http://kubemumibesedu.epizy.com/axel_f_theme_piano_sheet_music.pdfIn PDF document text
    • http://gulepoko.epizy.com/4353661646.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_off0000db6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6B 5628 bytes
SHA-256: 9ac36f4ab4bbc3530186151414e48eb64745553c2e3894bdec42b3aa3f3a3515
font_01_sfnt_off0000ee86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE86 10144 bytes
SHA-256: 9123b2649a20175315380a5e52c13577fbbe629d76b84d246b97850531a10c11

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