Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a84b1ac66e0a488…

MALICIOUS

PDF

72.9 KB Created: 2021-02-12 07:37:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ed525f167adbd1ddc412747f13448fc0 SHA-1: 3eb4a59b4abf17728b5c1cffad85643ffb7e6d06 SHA-256: 0a84b1ac66e0a488a8a8b33038a1820ae538d3d72755c4bd3dfa37c4559c9a66
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=20th+century+artist+jean PDF link annotation
    • https://cdn.sqhk.co/xedufoga/gc8qijh/29795056784.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/XNhd5iD/zemoxotu.pdfIn PDF document text
    • https://cdn.sqhk.co/seseniluvus/WJihEXY/cats_crash_arena_turbo_stars_hack_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411512/normal_602012a36d94f.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/a6jbIM6/mipepufolenetajadilado.pdfIn PDF document text
    • https://cdn.sqhk.co/nakijalufiw/tFicifC/age_of_empires_2_cheats_car.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/tobojelusiwi/93642652956.pdfIn PDF document text
    • http://zupifokurox.rf.gd/aarum_kaanathe_aarum_ariyathe_malayalam_song.pdfIn PDF document text
    • http://vuzajakexe.epizy.com/education_board_result_marksheet_2019.pdfIn PDF document text
    • http://tasodeporojunez.epizy.com/vadokamus.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/weight_loss_running_by_verv_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/42856292427.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/guidelines_antibiotic_treatment_otitis_media.pdfIn PDF document text
    • http://jufavepe.epizy.com/sumewes.pdfIn PDF document text
    • http://xesogopobatobop.epizy.com/tejimiremewu.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_off0000e2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D3 5212 bytes
SHA-256: 6a681da2171ab8d4a2cbec30386f3d29e12759592a89a3329f92bdccdcd76c81
font_01_sfnt_off0000f48e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48E 10024 bytes
SHA-256: c930cf342f00d3111fce92d0ed8010e450effee1f7d1f904c7c3af8f9cdfa27b