Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c086d8086f04cc…

MALICIOUS

PDF

75.5 KB Created: 2021-02-28 10:46:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 96a35b41d822ca5df20ba0e357c04d56 SHA-1: d4c0de983d2f3d8e1fe5e17e9c03dd664e2d10fd SHA-256: c3c086d8086f04cc378968d848a2521c9cb857a4a10f7dd9cde6d4603e359613
126 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
  • 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://jottigo.ru/award?keyword=constitution+scavenger+hunt+answer+key+us+government PDF link annotation
    • http://icub.tech/construction_estimating_books2jh3z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450417/normal_602c769f29b89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382621/normal_5fcd119c06c9d.pdfIn PDF document text
    • http://obzorov.site/sejagugononakuvigavamejogmuo5.pdfIn PDF document text
    • http://futup.ru/color_wheel_definition_in_simple_words33evy.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/K2hgrPs/fideku.pdfIn PDF document text
    • http://1pokypki.website/the_bluffer_s_guide_to_etiquette_epubukb8s.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/DjhcDhj/purowifenamaxurisalovib.pdfIn PDF document text
    • http://vadosaj.getenjoyment.net/dipovev.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/aigW7ij/xuwekox.pdfIn PDF document text
    • https://cdn.sqhk.co/gasubapo/ibsiigg/dream_city_metropolis_offline_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382614/normal_5fde310c02cac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406793/normal_60335655b25ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447877/normal_601e50a73aa87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/linksys_wrt54g_setup_password_for_wireless.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_off0000e9a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A7 5404 bytes
SHA-256: d9bcc1273baae45e0899c1b9cc0ebc2958fb509fce12d3e4607f3feca964b01f
font_01_sfnt_off0000fbfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBFB 10912 bytes
SHA-256: 5da6ef2f055f4d680c8909c8d2a10d624c54568cd40b4b5c6b1e50f1d6b58da2