Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b86103810acd07…

MALICIOUS

PDF

70.2 KB Created: 2021-02-16 20:53:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4f2be16808d4d41e9ffe720b68693372 SHA-1: 1bf54bbe25ed1e83734363b8db9eac3fe1eff80b SHA-256: 65b86103810acd079c4e49256b239331725bc053351cf0ae783dd7c5d38afffa
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://druttle.ru/wix?keyword=bissell+powerfresh+deluxe+steam+mop+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423715/normal_5fe4e468a2699.pdfIn PDF document text
    • https://cdn.sqhk.co/vixawutozama/CojhTFe/pogewu.pdfIn PDF document text
    • https://digagewopaloz.weebly.com/uploads/1/3/4/6/134634746/c3e65bc9db5f0.pdfIn PDF document text
    • https://cdn.sqhk.co/buwuvibija/gjhaKfk/best_fall_2020_tv_shows.pdfIn PDF document text
    • https://cdn.sqhk.co/neguvobipa/ghihheQ/crazy_things_about_human_body.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469634/normal_5fcf60b591309.pdfIn PDF document text
    • https://cdn.sqhk.co/sujutowupolu/eqShfeb/81406703668.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/zerejibixupav/inter_first_year_books.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/zamuvinatulikuwiv.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/agneepath_video_songs_free_chikni_chameli.pdfIn PDF document text
    • http://gevorewububew.epizy.com/chloroform_in_water_well.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/wemesepipid.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/free_printable_templates_for_flyers.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/analisis_de_riesgo_del_trabajo.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/gitoragugasemaguxini.pdfIn PDF document text
    • http://segudufarus.epizy.com/ngu_idle_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/alcools_apollinaire.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_off0000d4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CA 5488 bytes
SHA-256: 3f41d6acd1f70cfce839218860c0289a9e99f822752e069357ed964aec30a819
font_01_sfnt_off0000e763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE763 10704 bytes
SHA-256: fc17a24e7a8eb20a91c510675c244e92504c66443a0b843a0ffabc207f44ad13

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