Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a556386ab1c9f73…

MALICIOUS

PDF

75.1 KB Created: 2021-03-01 20:48:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a2317e3e24fd90831b9557ed03dc0a88 SHA-1: a0dfafd695dd67e7214e188d625bca0438b77be8 SHA-256: 0a556386ab1c9f734db797562f1e0b3c71d16c1566307b1c0b1a99b23f92a82b
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://mezovuduw.ru/award?keyword=can+i+study+for+the+gmat+in+one+month PDF link annotation
    • http://new-leggins.site/unified_portal_epfo_java_settingsxjbki.pdfIn PDF document text
    • http://poradoit1.site/numelefenomigoruxolulufatfnze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475219/normal_5fe462331393e.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/jdhbhar/bowem.pdfIn PDF document text
    • https://cdn.sqhk.co/fitodofafe/viiAicY/bezukusisubuniwow.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/new_practical_chinese_reader_2nd_edition_workbook_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/powurejur/iewDhbP/lajilalefemazaf.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/oV7ieXS/super_mario_3d_world_vs_land.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478687/normal_5fd90378dd0fc.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/O5jfegd/87892258989.pdfIn PDF document text
    • http://rutabeno.22web.org/are_ilive_wireless_earbuds_good.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484609/normal_5ff408eb6b623.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fadadopotonu.epizy.com/9486183604.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/article_exercise_with_answers.pdfIn PDF document text
    • http://weparaxopulo.atwebpages.com/85452744438.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_off0000e809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE809 5296 bytes
SHA-256: 9656f90048ffe970ce27c369ddf9333abb957be03bd1951bed668568b1cbaf2b
font_01_sfnt_off0000f9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9EE 10956 bytes
SHA-256: a4eff3e268a4d406e69bcd6a40fc2bafab66bf77a4b7e6aa98efffa123372335