Malicious PDF — malware analysis report

Static analysis result for SHA-256 e823e997d9882da3…

MALICIOUS

PDF

69.1 KB Created: 2021-02-23 00:22:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7c99ce0f364818a613b5ce74469045c9 SHA-1: cab6f58fe558192cc6d942eef13dfa8a1335dc61 SHA-256: e823e997d9882da38cc7df1d4ba3abcacde50551c1edf81fb9ba47b1808085ff
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=google+maps+flashing+problem PDF link annotation
    • http://opsnatur.fun/matematicas_para_administracion_y_economia_haeussler_12_edicion_pearsondj28a.pdfIn PDF document text
    • http://prosale.company/reading_comprehension_test_for_grade_8_with_answersffnh4.pdfIn PDF document text
    • http://balifruit.com/24562631206e34ms.pdfIn PDF document text
    • http://razagewodun.iblogger.org/novav.pdfIn PDF document text
    • http://winwites.space/29445510880f7zb3.pdfIn PDF document text
    • https://cdn.sqhk.co/muxaferamet/KkwXjj4/true_football_national_manager_2019_apk.pdfIn PDF document text
    • https://sekatuxu.weebly.com/uploads/1/3/4/8/134894727/40f17a40070d0b8.pdfIn PDF document text
    • http://tuvexiwegivuke.iblogger.org/18827428072.pdfIn PDF document text
    • http://ek-arenda.ru/weekend_at_burnies_zip1mkz3.pdfIn PDF document text
    • http://thefortykuti.com/plan_unico_de_cuentas_bajo_niiftrmzv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kasesapat.rf.gd/xifalobizo.pdfIn PDF document text
    • http://didazejitikav.rf.gd/sitofenarikexuzaw.pdfIn PDF document text
    • http://jojofolarimema.epizy.com/fishing_report_lake_glenville_nc.pdfIn PDF document text
    • http://limixumijegaf.epizy.com/45222276996.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_off0000d293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD293 5488 bytes
SHA-256: 44142c3e0d70382acae5687c7ff0bfa5cc54da512c38aa707b9ced6f5cd267f8
font_01_sfnt_off0000e511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE511 10104 bytes
SHA-256: 6b085486c0a00f1eef8edeecdbd70a983719ca78bc9bdc84cc9d7527f924d694