Malicious PDF — malware analysis report

Static analysis result for SHA-256 86c9bda321e5246b…

MALICIOUS

PDF

76.1 KB Created: 2021-02-18 02:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a1e972ef55febbe5e54a6f2159533aa5 SHA-1: 6595ea459108a49b9b10a79fc79d976ab8e4176f SHA-256: 86c9bda321e5246b1c22138ca081f5a3f2ed1d20e9897d2acfce292fab21914a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=sanyo%2065%20inch%204k%20tv%20reviews PDF link annotation
    • https://cdn.sqhk.co/lorotukogof/Dggzxhf/light_me_up_ingrid_meaning.pdfIn PDF document text
    • http://xawinuvazok.iblogger.org/binomial_nomenclature_worksheet_biology.pdfIn PDF document text
    • https://mimevomakiket.weebly.com/uploads/1/3/4/6/134693464/sevigi-fudojojajo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369643/normal_5fe267c8b27e7.pdfIn PDF document text
    • https://bobilemako.weebly.com/uploads/1/3/4/7/134733435/7100419.pdfIn PDF document text
    • https://wivixape.weebly.com/uploads/1/3/4/8/134897282/f0d6e692f9.pdfIn PDF document text
    • https://bufekebutejef.weebly.com/uploads/1/3/1/8/131856184/sekudisa.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/nhhbrlI/sibilapupi.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/hceicgf/14537072980.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393752/normal_5fda891a13dbb.pdfIn PDF document text
    • https://sojetupeduxagi.weebly.com/uploads/1/3/1/8/131856567/wakegojimibavo.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/pugomonapoxuxe/wasobubenup.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/asteron_life_change_of_address_form.pdfIn PDF document text
    • http://gitogopafo.epizy.com/autocad_civil_3d_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/gta_vice_city_cheat_codes_free.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_off0000e99c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99C 5644 bytes
SHA-256: 0922281f748d3a107836500ab626e690d12ff1c7547a5838cfb16606b9a4fb30
font_01_sfnt_off0000fcf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF3 10972 bytes
SHA-256: 59e8f29688c4ce6323b0c79c27a22f3a73018fab9909e6fa5fd133c82547f99c

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