Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbfbf40adc35ebb5…

MALICIOUS

PDF

67.7 KB Created: 2021-02-27 17:56:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ab92bc00bb19d2db2fec7a0506485f63 SHA-1: 0cf7e774cf436644c1e48ba4a68155189c539846 SHA-256: fbfbf40adc35ebb52942ef207122202f4768e3ca03bec2304eba8e27da19633c
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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/wix?keyword=beamng+drive+apk+obb+download PDF link annotation
    • https://cdn.sqhk.co/pelelixixawo/X102HfK/17487577436.pdfIn PDF document text
    • https://kunobozawi.weebly.com/uploads/1/3/1/4/131453145/11d94f94059f.pdfIn PDF document text
    • https://nilelaji.weebly.com/uploads/1/3/0/7/130775665/7536554.pdfIn PDF document text
    • https://rorupuloloxotog.weebly.com/uploads/1/3/1/4/131409755/zotolakuxuvuluwedu.pdfIn PDF document text
    • https://cdn.sqhk.co/fojilude/dYUgcAH/descargar_bombsquad_mod_manager.pdfIn PDF document text
    • http://iclod.tech/moxalefaponevoku559oq.pdfIn PDF document text
    • https://bobazuforabi.weebly.com/uploads/1/3/1/4/131452976/wepozezibasenu_tokivafilovo.pdfIn PDF document text
    • https://cdn.sqhk.co/zisubiziwu/gfnHldS/66512235776.pdfIn PDF document text
    • http://beliyden.xyz/como_trabalhar_no_consulado_brasileirop4lek.pdfIn PDF document text
    • https://cdn.sqhk.co/koxajavu/hiJjdii/cool_keyboard_fonts_for_ipads.pdfIn PDF document text
    • http://digitalmicroteter.xyz/hydrometer_test_lab_report_conclusion0qyxp.pdfIn PDF document text
    • http://nonly.xyz/marisuwobetozejuterugewarc3cnd.pdfIn PDF document text
    • https://cdn.sqhk.co/kasesiseb/wijnmLw/61916754835.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/vavale/comparing_fractions_worksheet_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/business_case_free_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/tabofi.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_off0000c94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC94B 5504 bytes
SHA-256: a67d47f69b8b66a08208078fc5ff24e9a749b1013655b0eccde8c81288d887af
font_01_sfnt_off0000dc03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC03 11544 bytes
SHA-256: a807c1a555dd2861dded6137a9a03552a018f1900666d55e555b148e5de66475