Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f2894e24a961e85…

MALICIOUS

PDF

70.4 KB Created: 2021-02-24 06:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 70cacb92216487ed08f5abb31c9e87ae SHA-1: f1e749b8ab26c1f20acdfec3545ce60113257000 SHA-256: 8f2894e24a961e85bfd7e3868099689ce0d54941eda898127d5927d9e5d88a48
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=dnd+5e+werewolf+lycanthropy In PDF document text
    • http://reguburobijoda.22web.org/pvc_card_print_software_free.pdfIn PDF document text
    • https://cdn.sqhk.co/pamavunawi/MgP7igh/kekonavomumibirurur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393508/normal_5fd0a5f34e29b.pdfIn PDF document text
    • https://cdn.sqhk.co/pofadugilip/FjbzLjf/company_of_heroes_2_ardennes_assault_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/fiePhbQ/birawavawu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445733/normal_6034d043d1e27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466680/normal_5ff4d38f57142.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/6jcjitU/doomer_boy_and_girl.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/BcJheib/28161177606.pdfIn PDF document text
    • http://litamomun.22web.org/91672221680.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxegaxujifo/iEni39v/17715960217.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuguxukoz.epizy.com/21946732280.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/linoleum_vs_vinyl_sheet_flooring.pdfIn PDF document text
    • http://wesonujojamoga.epizy.com/alone_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/university_waterloo_map.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_off0000d2b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B3 5380 bytes
SHA-256: 32850b80825f4f60f39e29775d2ad93d39754ef86f5aff26519dcdd0194d7390
font_01_sfnt_off0000e521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE521 11792 bytes
SHA-256: 3ec544f2929b123cc0e10fc89fe3f2fc6118a7f32d39fd906954d4865cd56741