Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f9050d2f6c81767…

MALICIOUS

PDF

64.5 KB Created: 2021-02-01 19:10:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e6c276cc8e7548176e7bcbc902850d00 SHA-1: 0468a38d6ba75a2144b4580a1dfbc8e7ea7dcec8 SHA-256: 3f9050d2f6c81767c1fc1a86e7ad2239e692662bc8e41b35b9ffcf3d4eec57d0
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://maypoin.ru/123?utm_term=station+models+worksheet PDF link annotation
    • http://lnstagram-blue-ticks.com/milo_murphy_s_law_torrentsyx8w.pdfIn PDF document text
    • http://zdsshop.top/armitron_wr330_alarm_offd4wgj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387701/normal_600c0872e05c9.pdfIn PDF document text
    • https://cdn.sqhk.co/texafikogot/bidihGV/2645095370.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469863/normal_5ff4c4693bb5a.pdfIn PDF document text
    • http://1s.london/el_monstruo_de_colores_actividadesif97r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414169/normal_5ff20480e3f47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500889/normal_5fd816836797b.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/Ozgchhb/52890121490.pdfIn PDF document text
    • http://pribor-poverka.site/dobixuxavugotizidogtf59.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/v0jd9Ec/printable_connect_the_dots_puzzles_for_adults.pdfIn PDF document text
    • https://cdn.sqhk.co/kufalavoxig/eShgdih/5773463421.pdfIn PDF document text
    • http://naturalgood.space/gta_san_andreas_graphics_mod_apk_downloadrsuam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vanabigura.rf.gd/d_d_5e_war_cleric_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/photoshop_templates_business_cards_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/tulja_bhavani_hd_images.pdfIn PDF document text
    • http://beverotunege.epizy.com/heat_transfer_worksheet_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/insanity_flyff_farming_guide.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_off0000c2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B6 5324 bytes
SHA-256: a0f520124d4e9e88b26f008394b24dc2c327812b135393bbad3b6ad9c8aec2dd
font_01_sfnt_off0000d4af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AF 9620 bytes
SHA-256: 908522bd5f8dad0e6e0d25e5ffaa8ef7fcd40a855d9bc7fa47749c5ebc47a57d