Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf7b8aa2a83ae16…

MALICIOUS

PDF

73.2 KB Created: 2021-02-14 06:02:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a1cab849681bfa876be417a3538d04a7 SHA-1: 25aba66ef3ccc271f9b905ddbb703e3e1d93dd18 SHA-256: fcf7b8aa2a83ae16d50d32000524378c03b6fb78af005dd00bfff570c826afc0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=kingroot+4.0+apk+chinese PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375076/normal_6006743075755.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476445/normal_5fcbd7583fa31.pdfIn PDF document text
    • http://yozi.store/how_to_unlock_acer_projector_without_remoteo3w6z.pdfIn PDF document text
    • https://cdn.sqhk.co/takodabu/2gih7LU/the_simpsons_road_rage_gamecube_gameplay.pdfIn PDF document text
    • http://xazufajemexeb.22web.org/39177501805.pdfIn PDF document text
    • http://kisedevobale.22web.org/the_beguiled_1971_full_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501356/normal_602841d4e5f28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482418/normal_5fdc4bb68394e.pdfIn PDF document text
    • http://werenntaq.online/nuzokofapanawiwado20ur.pdfIn PDF document text
    • http://waliwosodumobu.iblogger.org/vans_sk8_hi_platform_black_and_white.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/cYjjOob/68898119515.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zekakodususebu.epizy.com/82581164555.pdfIn PDF document text
    • http://barirenuvekesup.epizy.com/tomb_of_annihilation_level_guide.pdfIn PDF document text
    • http://danuriluwo.epizy.com/nagomemofarapotuwe.pdfIn PDF document text
    • http://bumevibil.epizy.com/character_reference_form_cpa.pdfIn PDF document text
    • http://zopijejezi.rf.gd/fuwexerugibazipepoz.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_off0000e338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE338 5456 bytes
SHA-256: bb25dbb7acd8314e2fdf322ad20ea08b7e9a2c81a12bdd2e5d2e402595da14f8
font_01_sfnt_off0000f5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D9 10024 bytes
SHA-256: e248d8bb76ab49408b77cd27cd057a1f5762866db3e2181f64c9536c78d9177f