Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcad6128e13ad33a…

MALICIOUS

PDF

65.0 KB Created: 2021-02-18 22:04:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dc3ff5fc6bb704392806f97bea669394 SHA-1: 868bba26b3b70722429bd3ef746a35404f88ab2f SHA-256: fcad6128e13ad33a037e26645443f80fbf74dc579c7d087b5e8c5fd46be3b212
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://seumenha.ru/123?utm_term=vocabulary+from+latin+and+greek+roots+unit+2 PDF link annotation
    • https://cdn.sqhk.co/zarepowake/tjfgfha/nintendo_switch_parental_controls_pin.pdfIn PDF document text
    • https://cdn.sqhk.co/nezusoxe/bGqiiZq/mad_max_fury_road_black_and_chrome_differences.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/hc5heYg/car_racing_simulator_game_download_uptodown.pdfIn PDF document text
    • https://felelitujafi.weebly.com/uploads/1/3/5/3/135392562/adfebe28a050af.pdfIn PDF document text
    • https://kezofufilulo.weebly.com/uploads/1/3/4/4/134488682/5300436.pdfIn PDF document text
    • https://cdn.sqhk.co/tejikeluz/bmAGggF/rajunevuge.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/rhajjgc/woodshop_dust_collection_system_diy.pdfIn PDF document text
    • https://cdn.sqhk.co/tarolaser/eyqS44j/79063175638.pdfIn PDF document text
    • http://vavoferidedodif.66ghz.com/boy_games_for_free_online.pdfIn PDF document text
    • http://gonimuliveza.22web.org/rewajusoromuwid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467561/normal_601a41e9493a7.pdfIn PDF document text
    • http://fofafowazu.66ghz.com/mail_format_for_account_ledger.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/hilhjor/tajuxuxidafu.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/pujirageg/fopekegepif.pdfIn PDF document text
    • http://peregal.epizy.com/pivoxurexazatunudujuderuw.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_off0000c343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC343 5744 bytes
SHA-256: 9d26a9aa5bdf349a3bef744e0086bdb441b532a6d4a69d35e2dbf8f56f25e913
font_01_sfnt_off0000d6d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D1 9564 bytes
SHA-256: 6331d5906d09938b6b18c3f445a948e4f440451e2535d46a8f0b2e4393b1cacd