Malicious PDF — malware analysis report

Static analysis result for SHA-256 5128033cafe059b1…

MALICIOUS

PDF

64.2 KB Created: 2021-02-17 05:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 269bb8f0b8bb0b877792d6c8851b5d49 SHA-1: 1c8d3af8889137dcb5a2ad0109a47aea13d032d3 SHA-256: 5128033cafe059b1d62529ee2981e212e6e285b378903f79d3e6d70d564e4176
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/123?utm_term=nespresso+vertuoline+espresso+pods+amazon PDF link annotation
    • http://teleporttur.ru/lefton_colonial_village_collectors_guide78ykm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454822/normal_5fcefc161068f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421639/normal_5fee88548fb46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389361/normal_6015404044086.pdfIn PDF document text
    • http://kudretbozaci.com/airbrush_magazine_free_downloadj6tar.pdfIn PDF document text
    • http://lastmarkt.ru/nexus_2_torrentgc03e.pdfIn PDF document text
    • http://drilltech.info/dosuvoxegokitotewisebsi6n4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446015/normal_5ffdbd17e79d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443824/normal_600f91b9728bb.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/bulozor/potassium_chloride_in_5_dextrose_and_normal_saline_davis.pdfIn PDF document text
    • http://genenapukiral.epizy.com/foravuxijinesadaxipekaso.pdfIn PDF document text
    • http://tefegofesewo.rf.gd/conjuguemos_grammar_worksheet_subjunctive_vs_indicative_answers.pdfIn PDF document text
    • http://luwekexopevom.rf.gd/assassin_s_creed_unity_pc_game.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/92135845468.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/zezekavekamolejinaduv.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/home_depot_vinyl_sheet_flooring_installation.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/zolusadepuwasasofenemuju.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/pedik.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_off0000c089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC089 5184 bytes
SHA-256: e18a2bd4d6d9c88d79c85de6475f844addf57c1cd3cf2baf4ee8ab4946e6e8bb
font_01_sfnt_off0000d222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD222 9800 bytes
SHA-256: 6c0b6984a55031993ae177c7f0a8554a5e35479c1befdb20cf47c10974dc0936