Malicious PDF — malware analysis report

Static analysis result for SHA-256 873ee70ebc299eb7…

MALICIOUS

PDF

72.7 KB Created: 2021-02-16 12:11:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 446fdc96216b9c002fcb723cf0406e65 SHA-1: b389567fb6c011de9c15413ce350f02ac2ad22cf SHA-256: 873ee70ebc299eb75ef1dd0b2091337e978c90d3503d1dc3a12c2b0b1187b18c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=idle+monster+td+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485587/normal_6024cf3342f6e.pdfIn PDF document text
    • http://show-visitor.xyz/free_blogspot_responsive_templatesv4snr.pdfIn PDF document text
    • http://sait-ok.ru/91522452117d554c.pdfIn PDF document text
    • http://duxaromovaxizom.iblogger.org/tcs_aptitude_questions_and_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450351/normal_5fcaecdbb9c51.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/biomedical_instrumentation_ebookygewq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375699/normal_5fc5e65a44232.pdfIn PDF document text
    • http://helplnstagramcontact5087423.com/gakara_ganapati_sahasranamavali_in_kannada48241.pdfIn PDF document text
    • http://sekewutu.iblogger.org/adaptation_worksheet_answer_key.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450504/normal_600ed1a5255b4.pdfIn PDF document text
    • https://cdn.sqhk.co/ninujamezol/hfgcIie/riverside_drive_in_leechburg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zoxutuperovizo.epizy.com/lovimugube.pdfIn PDF document text
    • http://walefusariwe.epizy.com/52157616696.pdfIn PDF document text
    • http://tinosizifaxuful.epizy.com/l_t_housing_finance_annual_report_2019.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_off0000e3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D8 4872 bytes
SHA-256: 909f8a168689e940db5ff9df3dacdaa4370ac7bbf5ea4a5bcaf27224f34f8e50
font_01_sfnt_off0000f453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF453 9952 bytes
SHA-256: 0e8c5180a4210b9d90e97e7eae755acb057226ba4377ad3b1a82ab2b00509076