Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c298950a085faea…

MALICIOUS

PDF

72.7 KB Created: 2021-02-23 01:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dd85a98048a485b1b075c2be13400aa8 SHA-1: 6c09d97f665973a26b64cb0b58afa82aa39f4119 SHA-256: 7c298950a085faeacd3766777995b7fe41f055c58118e9c036988e49a3574112
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/wix?keyword=coc+gem+generator+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486983/normal_6026827219a2a.pdfIn PDF document text
    • https://cdn.sqhk.co/rotexopapi/EUhbWhc/cafe_racer_seat_for_sale_olx.pdfIn PDF document text
    • https://cdn.sqhk.co/vavusiwi/bihjegc/microsoft_azure_portal_free_trial.pdfIn PDF document text
    • http://goodik.fun/how_to_get_a_helicopter_in_gta_5_cheatnsbdu.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/jigjfjc/61618306060.pdfIn PDF document text
    • http://confirmationhelpcenter.com/vexonedekerazcrewd.pdfIn PDF document text
    • https://cdn.sqhk.co/losegiro/RgifG0M/sizojexevavarulamagaw.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuneduzib/1hehcoU/sifexovixexuvaga.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/hwQcGjd/5413834697.pdfIn PDF document text
    • http://lnstagramcopyrightmanagement.com/xopugadinw2x.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/kisimujuk/antivirus_for_windows_8._1_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/amazing_grace_song_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/kegunanukupumav.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C9 6692 bytes
SHA-256: 7d0a9227f186e738e3f32ebb2d8116295caeda4ff173c1e17a5a4a36f47f5683
font_01_sfnt_off0000e04c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04C 5076 bytes
SHA-256: bcc615815592d0f64cd9264a108c72fe17d5aafe96a19f28b417a2cc8e745cd8
font_02_sfnt_off0000f182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF182 10624 bytes
SHA-256: ea3b4fa3d44679402105d8604061df03b94a8c579d868341a385bac88cb112a3

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