Malicious PDF — malware analysis report

Static analysis result for SHA-256 4684ef69a96fe5f6…

MALICIOUS

PDF

70.8 KB Created: 2021-02-14 01:46:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9f9f7726c859f3ab83a14c5320d15401 SHA-1: 3629078e61f2c3778ad2084172af4e40224c4c5e SHA-256: 4684ef69a96fe5f6701d142db452b6546329cc1f35ecfd6ff1e5a7a6f19ec9e9
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=my+feudal+lord+pdf+urdu PDF link annotation
    • https://tomavibevojivow.weebly.com/uploads/1/3/4/0/134016690/zejemo_semovege_xefedikinole.pdfIn PDF document text
    • http://dvestideyli.xyz/pauvre_anne_chapter_4mstt2.pdfIn PDF document text
    • https://fomunova.weebly.com/uploads/1/3/4/6/134684458/662abc4a15a.pdfIn PDF document text
    • http://karnaval.host/income_elasticity_of_demand_worksheetyycgr.pdfIn PDF document text
    • https://kenazago.weebly.com/uploads/1/3/1/0/131070597/4672120.pdfIn PDF document text
    • http://normab-id.com/rukovutujixel2wbea.pdfIn PDF document text
    • http://123dutch.com/40849197820208bo.pdfIn PDF document text
    • http://leree4.club/xipenemawokigoposivowubupmg4k.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/rikolesafuwofar/6473775937.pdfIn PDF document text
    • http://ruguwusizomu.epizy.com/kazizebad.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/beach_head_game_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/68829818934.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/digital_multimeter_dt9205a_user_manual.pdfIn PDF document text
    • http://koxowasone.epizy.com/mabukimuzig.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/sustainability_reporting_guidelines_for_publicly_listed_companies.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_off0000daa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA7 4964 bytes
SHA-256: 17749376b35bbe78ad69c617d1e603ba8428d65779ca55014540484e7c38b3a2
font_01_sfnt_off0000ebb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB1 10236 bytes
SHA-256: 04a87ad69722b5536bd067aeab417fcf450d7a012c1167b99a7284ff91ac5dfd