Malicious PDF — malware analysis report

Static analysis result for SHA-256 51caf424c3c0cf2c…

MALICIOUS

PDF

76.1 KB Created: 2021-02-21 02:32:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c1acc3a94e1995d7abd40a992f8acaad SHA-1: f798447c0ea95d36be93f814a38734615b5a8dde SHA-256: 51caf424c3c0cf2ca3b4dcb30134e236423b35139ac1d85f4087f6a6a6282aa7
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://seumenha.ru/wix?keyword=marvel+future+fight+hack+ipa PDF link annotation
    • http://summ-green.fun/henrys_law_constant_for_co2_in_water_at_25_degrees_cj4rpy.pdfIn PDF document text
    • https://cdn.sqhk.co/tejosepu/igjfieV/21311273733.pdfIn PDF document text
    • http://btsworld.org/samsung_galaxy_s20_ultra_live_wallpaper_apklddef.pdfIn PDF document text
    • http://redita.fun/57083113669ghymj.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/fpjgm6B/game_of_thrones_dothraki_warlord_wife.pdfIn PDF document text
    • http://istlan.fun/924758093820it82.pdfIn PDF document text
    • http://klokisik.space/54627348913dob51.pdfIn PDF document text
    • https://cdn.sqhk.co/muvetowiripa/fgCjhib/77467343021.pdfIn PDF document text
    • http://topcreditscore.info/jilepufonulewatulnw2v.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/hghaggX/guardian_tales_7-_3_100.pdfIn PDF document text
    • https://cdn.sqhk.co/dufukeraj/3Hielqo/saboxolesutiladabov.pdfIn PDF document text
    • http://buytoday.cc/xuwulupilenumowibotud7ss.pdfIn PDF document text
    • http://eferevole.com/yale_forklift_serial_number_guidekg9ey.pdfIn PDF document text
    • https://cdn.sqhk.co/zutujodara/jdiirig/climbing_trail_running_shoes_for_hiking.pdfIn PDF document text
    • http://vandify.com/how_to_fix_corrupted_data_on_ps4_pro208mg.pdfIn PDF document text
    • http://wide-mean.top/back_street_apparellgr5u.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/ghBgcm9/74611683503.pdfIn PDF document text
    • https://cdn.sqhk.co/zojafatowulu/K3ihhcE/lucky_supermarket_senior_citizen_hours.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_off0000ee0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0A 5228 bytes
SHA-256: 63dab29ff5e2ef8f6a1d9ed24d3c950fd6352ca34d54ca2221bf01e3d05c1b80
font_01_sfnt_off0000ffe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE8 10472 bytes
SHA-256: 2a0b411ed2dbcad74bb80169adbd58ca346ed7e13260cbfa6afab58e7645e322