Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98890395d9fa2a2…

MALICIOUS

PDF

72.0 KB Created: 2021-02-25 18:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1ba7c005f8081f1a580f15e4f9930e2d SHA-1: 7350115d937fed950ceca287c8ca31469eb130c6 SHA-256: c98890395d9fa2a292f395580d60117a8c920893b7b11440201351bb5aebaf7b
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/award?keyword=kioti+lk3054+repair+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4497071/normal_5ffc6d0675d72.pdfIn PDF document text
    • http://naturalm.space/idle_poring_thief_guideyfded.pdfIn PDF document text
    • https://fugikoji.weebly.com/uploads/1/3/4/6/134611078/dokutefiwetasuguti.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/zibebi.pdfIn PDF document text
    • https://warexuzema.weebly.com/uploads/1/3/4/6/134601764/pamat.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/qT1ihhd/19216426195.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/1912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374185/normal_602da17f7383e.pdfIn PDF document text
    • https://refaxoke.weebly.com/uploads/1/3/4/6/134602084/8fd43535c9ad9f.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/NMtv8gc/1444502672.pdfIn PDF document text
    • https://cdn.sqhk.co/genamudazunu/6hiedwO/xejerunanez.pdfIn PDF document text
    • http://sallehub.xyz/46145876665w9lry.pdfIn PDF document text
    • http://nazhivy.net/my_zone_headphones_only_get_radioc8e7r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5fd5fcd279e27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423188/normal_6029dbd84fba1.pdfIn PDF document text
    • http://complect-tech.ru/nukopetamejemipamobigexipynn.pdfIn PDF document text
    • http://terugate.mypressonline.com/kosivawitakowofib.pdfIn PDF document text
    • http://front-glass.website/is_iodine_aqueous6y1dn.pdfIn PDF document text
    • http://mavigawika.scienceontheweb.net/sozef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8A 5340 bytes
SHA-256: 8d16c26c4c6ecb37b847c304f733c585d2f259f2ebf0fa0f344f873312a04c6f
font_01_sfnt_off0000eda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA9 10904 bytes
SHA-256: 32e3d676a2a2a1ac4f164196068c40c90c2ce5d3ba97ba4bf8ee003590cbd087

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