Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ad72a35cfb1f4c…

MALICIOUS

PDF

72.2 KB Created: 2021-02-28 00:25:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6b536668285dd90d581ac23be6d7dfb7 SHA-1: 26cf33c113eaba555db57a73e1df34b01553f8ee SHA-256: 05ad72a35cfb1f4c72b499528b4ab31284f919c8c30aa6e4d855184c5dc896a4
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://soxebez.ru/award?keyword=cual+es+la+estructura+del+texto+literario+resumen PDF link annotation
    • http://xepidenad.scienceontheweb.net/agnus_dei_sheet_music.pdfIn PDF document text
    • http://davupopebuwiser.sportsontheweb.net/dulojifetagazaso.pdfIn PDF document text
    • https://cdn.sqhk.co/feledigowud/gdjaiyW/91428296292.pdfIn PDF document text
    • https://cdn.sqhk.co/lonubugogere/Cjgepdv/brahman_cattle_characteristics.pdfIn PDF document text
    • https://poxatekegevu.weebly.com/uploads/1/3/4/7/134753674/3758657.pdfIn PDF document text
    • https://kebumemimax.weebly.com/uploads/1/3/1/6/131636814/wajow-fapamu.pdfIn PDF document text
    • https://cdn.sqhk.co/titukopano/ifiaifE/39540092930.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixiluvigatekij.atwebpages.com/lion_king_food_chain_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/student_exploration_human_karyotyping_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/molunejafimobudid.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/16886433307.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/wepezumosifes.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/expository_non-technical_writing_sample.pdfIn PDF document text
    • http://zoligagomuwe.onlinewebshop.net/losoreniwakazolajadi.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/lineage_2_revolution_guide_slayer.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/it_s_a_boy_sheet_cake_ideas.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_off0000dd2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2A 5056 bytes
SHA-256: 4c26ec73dcd913f9856cbb05586fc5903e18c61f76745c52564a49a8421138d0
font_01_sfnt_off0000ee44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE44 11128 bytes
SHA-256: 85bd4826f30837c8a89f26cdb762f7481b82b4ecd211eaab6e2496cdba045386

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