Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8118ca332706857…

MALICIOUS

PDF

68.8 KB Created: 2021-02-12 02:38:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9bd5b636d143172da4cb2d05befc88de SHA-1: a0921ff4b0dc1ea8b1a8e12b9ac5f8526e6648b3 SHA-256: b8118ca332706857368902061b6d8b8ce3d671b82613f19a843803adce9cc39d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=neato+botvac+manual PDF link annotation
    • http://instapodarok365.site/galaxy_battle_box_knives1neg7.pdfIn PDF document text
    • https://fikobovivinuzo.weebly.com/uploads/1/3/0/7/130739062/nozolatudiwiraki.pdfIn PDF document text
    • https://gezedasi.weebly.com/uploads/1/3/1/3/131378850/falofazawuvoma.pdfIn PDF document text
    • http://comp-arenda.site/chaudhary_charan_singh_university_online_examination_formubdhv.pdfIn PDF document text
    • https://vuminuzatadabem.weebly.com/uploads/1/3/4/3/134311796/pujajebomolison_zamuxu_zugarugujene_lumawozawagog.pdfIn PDF document text
    • http://characduwe.space/zosofelosexijedujobab5ztq5.pdfIn PDF document text
    • http://changely.club/how_to_fix_sheetrock_tape_cracks2b4u0.pdfIn PDF document text
    • http://extrameets.fun/kedufobezikeguzeduzudixatneqn7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pasawe/zopemajadolon.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/43089776358.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/61010202829.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/video_lucu_animasi_buat_story_wa.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/managerial_accounting_income_statement_format.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/acog_guidelines_on_induction_of_labor.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/rakasipofesebujifaronopi.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/acceptable_i9_documents_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/48343933063.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/antalyaspor_formas_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/police_car_cake_template.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/xukalipewame.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_off0000c531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC531 4676 bytes
SHA-256: d3afbc6031a1c933342b1c91f5c908a688b01d432c68c54c067629b934d36c46
font_01_sfnt_off0000d50e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50E 10208 bytes
SHA-256: a0412e7d433c22f66fe16c6b6c046325381b3dc94c9dc416dd9b0124105c53a7
font_02_sfnt_off0000f7df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7DF 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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