Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5a3d5c3cfd9d02…

MALICIOUS

PDF

71.4 KB Created: 2021-03-01 08:37:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 201a814c8d59e7ef13efbe5b394e2a0f SHA-1: d835eb8a5dc973117055685d7da1d475ce4bc9d5 SHA-256: 8a5a3d5c3cfd9d02aa9d074f26ea1bcddef2b0e87320db825713b639fa301e98
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://vilenefex.ru/award?keyword=wd+4tb+my+passport+ultra+for+mac+usb-c+ready PDF link annotation
    • https://xaxazusilu.weebly.com/uploads/1/3/4/7/134757455/5197592ee712.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/the_andromeda_strain_2008_part_2.pdfIn PDF document text
    • http://daludaja.getenjoyment.net/dell_latitude_d820_ram_upgrade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460963/normal_603c50b77d880.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418170/normal_5fcb1327f0e1c.pdfIn PDF document text
    • https://wiwazojuxosupud.weebly.com/uploads/1/3/1/3/131379189/rawebaloxeji_noniwe_xujiz.pdfIn PDF document text
    • https://sajurewuvow.weebly.com/uploads/1/3/4/0/134042423/tiranu-goverenib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420903/normal_602ea7e7a040e.pdfIn PDF document text
    • http://vuwiwetidajin.mywebcommunity.org/what_are_examples_of_dynamic_data_structure.pdfIn PDF document text
    • https://nezuvaju.weebly.com/uploads/1/3/0/9/130969963/515929.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/96476427168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407057/normal_5fe6f7926ab79.pdfIn PDF document text
    • https://woxukobu.weebly.com/uploads/1/3/4/3/134392577/vifokope.pdfIn PDF document text
    • https://cdn.sqhk.co/zokosofu/5kgdhgV/black_widow_costume_party_city.pdfIn PDF document text
    • http://fijexojor.getenjoyment.net/little_nation_and_other_stories_audiobook.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://soxosodazafu.epizy.com/rheumatoid_arthritis_adalah.pdfIn PDF document text
    • http://posidepixofonep.epizy.com/91741760761.pdfIn PDF document text
    • http://gogufujupi.rf.gd/mepulofi.pdfIn PDF document text
    • http://todoxejanifala.rf.gd/nanuvedufunoxuxojupeb.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_off0000d72c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72C 5676 bytes
SHA-256: 917c1bcb594f1ccae65254d98f9bec2bb1d5f0637e0733e38d3743329ea9f0eb
font_01_sfnt_off0000ea7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7D 10560 bytes
SHA-256: 8f0e3b4f1822ec51fe0c2cd6d8b1bae27049abb97873eea9503a0713b58acf70