Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b769d2e73cb8d62…

MALICIOUS

PDF

66.2 KB Created: 2021-02-23 00:26:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66fdc5d4705f89025729c3a5fb1686d2 SHA-1: 3d6eeeee5b2eb903ac82fdeb602f06781daf407d SHA-256: 3b769d2e73cb8d620e01c28cbd5ad7e1c5c6c0ad2a212d6cd2cd86b89870d0f0
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://seumenha.ru/wix?keyword=capitulo+9+vamos+de+compras+vocabulario+1+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383149/normal_602f8219df3f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454172/normal_5fdd692091054.pdfIn PDF document text
    • http://sitajejo.22web.org/29425077966.pdfIn PDF document text
    • http://voxamuzovo.22web.org/interstellar_stay_piano_sheet_music.pdfIn PDF document text
    • http://copyright-help-report.com/writing_movie_titles_in_apa_formatk67j6.pdfIn PDF document text
    • http://mugedly.xyz/ikea_lagan_dishwasher_installation_manuals3jwj.pdfIn PDF document text
    • http://zelopaqq.xyz/95314397591ci152.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490369/normal_6020c4e5bf8dd.pdfIn PDF document text
    • http://carbags.site/cen-tech_digital_multimeter_manual_continuity_test9jvht.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422161/normal_60342b145dd8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388814/normal_5ff2023137afa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zowipazivavi.epizy.com/wazujijobakijigiva.pdfIn PDF document text
    • http://kurujabarufuxe.rf.gd/fotix.pdfIn PDF document text
    • http://gitadafip.rf.gd/avision_sheetfed_scanner_ad230u_driver.pdfIn PDF document text
    • http://xudadadof.epizy.com/tewikulataponarolimonagu.pdfIn PDF document text
    • http://gotuziput.epizy.com/guided_notes_arithmetic_and_geometric_sequences.pdfIn PDF document text
    • http://puwiliguso.rf.gd/31595153605.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_off0000c096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC096 5792 bytes
SHA-256: ca144a9e7e20d1df5382bc84516832df140eafe055853fb254b857b17423cef0
font_01_sfnt_off0000d44f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44F 11276 bytes
SHA-256: 5417e796904441b54d810468feceb1ace9de46efddd388cf679a50f8d8c0faca