Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a22448a591dd33…

MALICIOUS

PDF

73.3 KB Created: 2021-02-22 01:41:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 0494b1c894587ede65997ee20820d970 SHA-1: 34143eebd922b501e7dbfc11ee100cda5cdd577f SHA-256: d7a22448a591dd330ea835a193cda639bce8888ff453a2819bcc860d01ef5520
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://seumenha.ru/strik?utm_term=asus+double+450mbps+n+router+rt-n66r PDF link annotation
    • http://akfb.online/retro_wallpaper_computer4cxov.pdfIn PDF document text
    • http://lumacy.site/gbc._emu_1._5._37_apk_downloaddx0c4.pdfIn PDF document text
    • https://kaxesudinebeg.weebly.com/uploads/1/3/1/3/131379803/3387508.pdfIn PDF document text
    • http://logoped-samara.ru/gelotefubarova0ufb0.pdfIn PDF document text
    • https://jetosiwer.weebly.com/uploads/1/3/4/7/134767378/kobijujefelexiku.pdfIn PDF document text
    • https://cdn.sqhk.co/ferobisuw/djhYggZ/60323350573.pdfIn PDF document text
    • http://reduslim-officialsite.site/colon_cancer65g1s.pdfIn PDF document text
    • http://ru-en.xyz/sojilabazapukamivenzca6.pdfIn PDF document text
    • http://boothattendant.com/how_to_convert_midi_track_to_audio_in_logic_xem0cy.pdfIn PDF document text
    • https://kekageguva.weebly.com/uploads/1/3/0/7/130776826/9545581.pdfIn PDF document text
    • http://gbo.guru/fexidinivuxedozovefodt1zi.pdfIn PDF document text
    • https://vokewubepil.weebly.com/uploads/1/3/4/4/134443825/nuzalepopajazixida.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/towakog/21503933881.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/avengers_endgame_desktop_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/best_face_sheet_masks_in_india.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_off0000db8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8A 5564 bytes
SHA-256: 8488913102c9f87210d1db7998bd48072a3524fbed3158f90154987e97b70350
font_01_sfnt_off0000ee6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6B 12728 bytes
SHA-256: 82a9f3253e2698cd174809f659e124a1bce30d9c307f1fa2e9d95a834d9aff87