Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dcad411d9803cc6…

MALICIOUS

PDF

75.6 KB Created: 2021-02-26 04:06:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c61f04340bb4abed5b6f8a546db5d25c SHA-1: 7a2a3ddc4731b704d51182ec04bbe7ea8d44ded0 SHA-256: 1dcad411d9803cc6b284e3b6be1c37fd22519ba30cd32778c439a2b6ad81f24b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://jacksth.ru/123?utm_term=top+5+interesting+books+to+read PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390074/normal_601a253cdd95a.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/kidde_nighthawk_pi9000_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530036/normal_60270ef7bec56.pdfIn PDF document text
    • https://nugilura.weebly.com/uploads/1/3/5/3/135317706/fodopiwesewa_bekefim_xujil_tofuwemupofaruj.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/what_is_the_meaning_of_araby_in_bengali.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/logitech_z_5500_subwoofer_replacement.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lobaman.epizy.com/clinical_hematology_mary_louise_turgeon.pdfIn PDF document text
    • http://xojesenokok.epizy.com/badmash_dil_singham_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/como_atualizar_o_whatsapp_2019_android.pdfIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/after_we_collided_full_movie_english_youtube.pdfIn PDF document text
    • http://vuvinumebipoje.rf.gd/how_to_become_chartered_financial_analyst.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/delta_kitchen_faucet_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/22396709822.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/tipusatigajibeluvinugokag.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/dopelurugudemuvamekejuk.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_off0000ecd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD4 5372 bytes
SHA-256: 30d3a95724034697a6040382c3fa6d1203d3d08f92043049ed641afa3abd67e2
font_01_sfnt_off0000ff20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF20 10104 bytes
SHA-256: c0d9bcd0acf536dafc92ed6b215da1d7d9d0d5f8c8563207ff8987597676c306