Malicious PDF — malware analysis report

Static analysis result for SHA-256 437e55e4b9b475f8…

MALICIOUS

PDF

72.3 KB Created: 2021-02-23 00:54:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 048f6cbb37b8b577d8e69eb0e276d8e3 SHA-1: 50a6504faf6a5e3d049b0a54f9bf6e91aeec09ac SHA-256: 437e55e4b9b475f80f0f7e6ef09814c3c4480e0384b448e9d22210f0c9c88c2a
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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rabusefikitane.weebly.com/uploads/1/3/5/3/135314736/1885775.pdf.
  • 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/wix?keyword=the+most+dangerous+game+worksheet+answer+key PDF link annotation
    • http://sweetygirl.club/slim_fit_cafe_racer_jacket3hzll.pdfIn PDF document text
    • http://thedefenseforge.com/govepegozidifosofovelaxev6ajjv.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/Vjau3dt/arka_master_brick_breaker_achievements.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/fjgG20f/lucky_coin_farm_terraria.pdfIn PDF document text
    • http://hookup753.fun/29886291783xqf59.pdfIn PDF document text
    • http://contact-git.top/free_oldies_music_online_radio_stationslko46.pdfIn PDF document text
    • http://carbackseat.site/lalasozarovadirewijiv0jpyw.pdfIn PDF document text
    • http://detonic-hypertonie.website/finger_flippy_knife1hmwc.pdfIn PDF document text
    • http://expressday.online/wrong_turn_7_full_movie_download_in_hindi_dubbed_300mblbbrj.pdfIn PDF document text
    • https://rabusefikitane.weebly.com/uploads/1/3/5/3/135314736/1885775.pdfIn PDF document text
    • http://azalea.store/pelusedowafujebarewevafujn3xi7.pdfIn PDF document text
    • http://vipmanmarket.space/xafagakosixafedadij4z.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/argihbu/kosijo.pdfIn PDF document text
    • http://my-favshope.online/spectra_s1_plus_breast_pump_australiaxy2k4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dd56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD56 5416 bytes
SHA-256: fa1804bbd6960c387a8553e245cecb310f8dcd7063be44e3dc8ffc578fde2fbc
font_01_sfnt_off0000efac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAC 10684 bytes
SHA-256: eaf2f90c762228e4f7d4647426f95934aabd686115a0a255955d1be209e9e527