Malicious PDF — malware analysis report

Static analysis result for SHA-256 24db9e20f9904977…

MALICIOUS

PDF

64.4 KB Created: 2021-02-12 22:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fe0ed41e8167e0b1f49b73fd611f7b27 SHA-1: ae58e73486550e13d96c604624eedc2b8da94805 SHA-256: 24db9e20f9904977025b2d04884bf1430d27712188d22e173177b044fba2a821
196 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.
  • 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://maypoin.ru/wb?keyword=field%20hockey%20shin%20pad%20size%20guide PDF link annotation
    • https://toxoladosa.weebly.com/uploads/1/3/4/4/134479392/5025845.pdfIn PDF document text
    • https://vemusosafuz.weebly.com/uploads/1/3/1/3/131398108/waxabojomalud_sikomutewe_lanewavovag.pdfIn PDF document text
    • https://kulojimafad.weebly.com/uploads/1/3/4/5/134518235/7500038.pdfIn PDF document text
    • http://fezomoworiva.22web.org/76323535998.pdfIn PDF document text
    • https://kavuxidawikux.weebly.com/uploads/1/3/4/0/134000359/d32384d65.pdfIn PDF document text
    • https://josuriwomevopi.weebly.com/uploads/1/3/4/7/134769094/b5fea9def890d.pdfIn PDF document text
    • https://sivisobimiji.weebly.com/uploads/1/3/4/7/134754783/xojosililid-nedutesejubal-wefodizi.pdfIn PDF document text
    • https://posilopawirina.weebly.com/uploads/1/3/4/3/134353572/3339156.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478393/normal_5fc86df1bf097.pdfIn PDF document text
    • http://fexuvukenix.22web.org/sibinijatevofaxudekum.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/baxunaf/al_almohadon_de_plumas.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/32803364094.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/gipemo.pdfIn PDF document text
    • http://zijemuviwovo.rf.gd/14918782773.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/wedding_invitation_cards_designs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/interview_preparation_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/husqvarna_310_manual_dansk.pdfIn PDF document text
    • http://mefowoweman.epizy.com/ivory_tower_codycross_answers.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_off0000c1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1CB 5408 bytes
SHA-256: c380961fa9c322a4d6650829540ec2f30abcfe61f2ad64190b0a0ed7ce401f65
font_01_sfnt_off0000d449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD449 9436 bytes
SHA-256: cd1811ce099889298f5f93bd383aa55f0c93cc3716f9a138c78bc6698ac59204

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