Malicious PDF — malware analysis report

Static analysis result for SHA-256 913b5a005112a0f4…

MALICIOUS

PDF

69.4 KB Created: 2021-02-24 07:55:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c280dd21c352455bae20f21acf278f8d SHA-1: 51ba0f9b52d85d726384d828b5b0c08de77052f1 SHA-256: 913b5a005112a0f42eab503ee4f4df3a5bcb64035d4fa87189d98d855cfd14d1
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://baarspo.ru/wb?keyword=golf%20buddy%20aim%20w10%20watch%20strap PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460066/normal_5feaf169f33b2.pdfIn PDF document text
    • http://9gusevshop.website/54360026619h8hqj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409243/normal_5fe73e7a1273b.pdfIn PDF document text
    • http://aycotoro6.xyz/nuwugenotiq9y8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487903/normal_5ff6135b6af2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425256/normal_6009d7839d4fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420745/normal_5ff309cb732e7.pdfIn PDF document text
    • http://italia-doc.fun/lightbike_2_mod_apk_unlimited_moneyye4dh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475854/normal_5fc87a5927c10.pdfIn PDF document text
    • http://detonic-ro.website/tesumumedelepopejo85fsm.pdfIn PDF document text
    • https://cdn.sqhk.co/sivadapexiri/gw4hhKr/bomber_crew_mods_nexus.pdfIn PDF document text
    • http://webmastervlad.ru/kiera_cass_the_heirm99sd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479435/normal_5fd0edb40de50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402964/normal_6018b3f9b3d49.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/vuzufexarevima/assassin_s_creed_unity_size_uplay.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/mozajukunajurixerub.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/bojoxagafizoxupi.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/bangla_oporadhi_song_pagalworld.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_off0000d181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD181 5952 bytes
SHA-256: 44c5044917ef649c97cc970f4372ab2161f94eee5061b61921f918369f016083
font_01_sfnt_off0000e5b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B5 10200 bytes
SHA-256: 7809e81cf0b3b6594651c2b4422fd87080f26cecf4c48df156f0e9974d91a344

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