Malicious PDF — malware analysis report

Static analysis result for SHA-256 b67946023575cad8…

MALICIOUS

PDF

68.3 KB Created: 2020-11-09 19:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 315ff387a8c690b113054f9e8059edde SHA-1: b048e9e8692e9de8b3616943fbd39fcf679eb0c3 SHA-256: b67946023575cad80f5d033a6cad9d652a5eff3d66bc6c1e24ddb6ce70902bd4
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://trafffi.ru/123?keyword=amazing+tanks+2+game PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388158/normal_5f911c7127a7f.pdfIn PDF document text
    • https://sasenepekevob.weebly.com/uploads/1/3/4/2/134266747/b5c5604f3226a18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f8bff628ca0f.pdfIn PDF document text
    • https://pepusaneped.weebly.com/uploads/1/3/4/5/134503703/wumubekikepid-murob-tudonunaziwudis-fewoguvez.pdfIn PDF document text
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/jitugix.pdfIn PDF document text
    • https://xapunuzut.weebly.com/uploads/1/3/4/6/134683745/kefajorubinubi.pdfIn PDF document text
    • https://mivosubewo.weebly.com/uploads/1/3/1/4/131407796/parumaf.pdfIn PDF document text
    • https://rizenorugeworo.weebly.com/uploads/1/3/4/3/134379336/zajogatik.pdfIn PDF document text
    • https://gekojufoj.weebly.com/uploads/1/3/4/4/134438070/2059871.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f8a612c1e0d3.pdfIn PDF document text
    • https://xepuxewezikute.weebly.com/uploads/1/3/4/4/134437058/faditaj-pabamadapiviv.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/1b7f902.pdfIn PDF document text
    • https://kuromazu.weebly.com/uploads/1/3/2/6/132695519/texujoko-webudutasonorok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9c795c-aed8-43c4-861a-a8900124eb9d/gmat_official_guide_2019_error_log.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/audio_video_converter_pro_apk.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_off0000cdf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF5 5112 bytes
SHA-256: b07ae4b9f94f2009cba3f53428263704b7bf6b627dd0430c398244aa5a0d2cac
font_01_sfnt_off0000df57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF57 11028 bytes
SHA-256: 68001018f5727bc0457952a9296854a0a415ab892237500f73b39d0e14c5045e

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