Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b99fe45cc6e8b6…

MALICIOUS

PDF

75.3 KB Created: 2021-03-06 15:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0c95b35e402831e21faa3af0ad3f4903 SHA-1: 1ce2465b75978e406cb970a33d3cc07aa167db0a SHA-256: d2b99fe45cc6e8b6b65ae2906a4479acdbe4950929b61a229567baf616f910af
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://zajinet.ru/award?keyword=craftsman+scroll+saw+blades+for+metal PDF link annotation
    • http://rewita.fun/62503092780yh225.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/6gfAhb8/77037892078.pdfIn PDF document text
    • http://fofumumitem.medianewsonline.com/86114384951.pdfIn PDF document text
    • http://davorivugexawu.sportsontheweb.net/99518764302.pdfIn PDF document text
    • https://cdn.sqhk.co/jusulikipe/jf6nTJe/walmart_unicorn_cake_decorating_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/vibupiwoxaro/iehghMt/dekokawaxeji.pdfIn PDF document text
    • http://geekcods.com/how_to_include_an_autistic_child_in_the_classroomlnntl.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/sazomo/64065189824.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bfa804c-1e03-4715-b091-e9e969ff68d5/vipiroregizidofuw.pdfIn PDF document text
    • https://8c17aa34-c454-4d6c-a218-8929c845e329.filesusr.com/ugd/808cd0_3c09526e07884f28bc726715cc0eed03.pdf?index=trueIn PDF document text
    • https://cfc603e6-7cd4-4c42-812b-9722deb80ae4.filesusr.com/ugd/0e9fc2_4c87915de7154d8b8d2a89a4b306aca9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/business_in_a_box_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/44826401298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b7cba80-09c8-40c6-9fbc-71674e377282/31429723421.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cf9973e-1544-47fb-845a-06afc20be268/41109940670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2f2e1b9-68bd-48db-9bc1-3f58e27f473e/what_type_of_battery_does_a_kindle_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e039718a-670c-4563-8291-f3cb2ced3fa8/how_to_reset_samsung_tablet_t580.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/2894240161.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_off0000ea00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA00 5304 bytes
SHA-256: 38b908dbdc10c596dd5df3c175e441bf9a88912a47c243e7b0a8803287fbb7b5
font_01_sfnt_off0000fc01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC01 10516 bytes
SHA-256: c1ce3c210be2c1aa7134df8fdde6a83f952f9f6fab2f1854b1aa82b8d722c038

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