Malicious PDF — malware analysis report

Static analysis result for SHA-256 18b8914ecf02e479…

MALICIOUS

PDF

66.0 KB Created: 2021-02-28 20:23:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8b4aeb96addfa1c828eea3e31cb045f4 SHA-1: 59a65f1215a06c1a26cef747e91aba4ee78f27f5 SHA-256: 18b8914ecf02e4795206939eab5864194448baa47300341b8655593a3824fe2e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/wix?keyword=comptia+a%252B+book+pdf+2017+free+download PDF link annotation
    • https://cdn.sqhk.co/sevigexew/ijjeFig/pocket_size_bully_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/sihjgif/recette_sandwich_vegetarien_tofu_pour.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_5fd63fcd20057.pdfIn PDF document text
    • http://watogoda.mypressonline.com/68846135546.pdfIn PDF document text
    • http://bawazofo.getenjoyment.net/canon_vixia_hf_r800_price_in_malaysia.pdfIn PDF document text
    • http://wisatemubudu.medianewsonline.com/61709609053.pdfIn PDF document text
    • https://cdn.sqhk.co/wibetaxor/gghbSgi/rerase.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/XqwasJw/wapononusesibononef.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/gi8Ixhh/evolution_movie_2015_explained.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://podugidak.epizy.com/76737829764.pdfIn PDF document text
    • http://sidepojedava.myartsonline.com/how_to_write_better_essays.pdfIn PDF document text
    • http://rodowifesod.rf.gd/remozamusipuse.pdfIn PDF document text
    • http://nununad.myartsonline.com/fomirujeb.pdfIn PDF document text
    • http://nopugorib.onlinewebshop.net/how_much_does_it_cost_to_repair_charging_port_iphone_7.pdfIn PDF document text
    • http://dipuritaxuxok.rf.gd/lirenikurek.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/o_come_to_the_altar_sheet_music.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_off0000c42c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC42C 5616 bytes
SHA-256: 346feb402ea2d22affb4709e1e8f278e12c9cd88c617e9c5839408c1135bc814
font_01_sfnt_off0000d74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74C 10496 bytes
SHA-256: 1e326082daefe5e62d3a80e2a5183ae73d3f479bd372e550d138fae45cc21bf2