Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2d04b11bfb3380…

MALICIOUS

PDF

68.4 KB Created: 2021-01-18 18:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 4344abcdc48251de9073aa11313a00d3 SHA-1: 906d5845dd4ad81faa7b3deac27139a97daa8e59 SHA-256: ce2d04b11bfb33803a332a0c3c670d102eacc1b28af873739d5ef0fc169b5e7b
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=tapioca%20pearl%20color%20mix In PDF document text
    • https://site-1172011.mozfiles.com/files/1172011/sinimixobafotubuv.pdfIn PDF document text
    • https://site-1195605.mozfiles.com/files/1195605/bash_cgi_form_example.pdfIn PDF document text
    • https://cdn.sqhk.co/wiwifudu/gfgf3yA/jakivirilaxov.pdfIn PDF document text
    • https://cdn.sqhk.co/megodiwe/Pja1mhg/defense_warframe_rewards.pdfIn PDF document text
    • https://site-1175642.mozfiles.com/files/1175642/annual_leave_schedule_format_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/patemugimej/GjculDr/crime_car_driving_simulator_download.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/vNdtiaB/gears_of_war_2_xbox_360_price.pdfIn PDF document text
    • https://site-1177662.mozfiles.com/files/1177662/fill_holes_in_concrete_foundation.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/5d3hihf/60804879771.pdfIn PDF document text
    • https://site-1173625.mozfiles.com/files/1173625/wapugukuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wisuw/88192821405.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/83450605317.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/92661018911.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/android_lollipop_5.1_launcher_apk_download.pdfIn PDF document text
    • http://pifutujotot.epizy.com/brentuning_vs_maperformance.pdfIn PDF document text
    • http://nenimon.epizy.com/asrm_guidelines_gestational_carrier.pdfIn PDF document text
    • http://nidudovuj.epizy.com/dowuzabidivexurujawubob.pdfIn PDF document text
    • http://wokebusaxefani.epizy.com/yamaha_clavinova_clp-_120_service_manual.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_off0000cff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF7 4916 bytes
SHA-256: 6c5f19fd8b5fcc2e2e00f83469073cbd2e5c83f85edbe1cd8fddc2fbd8662976
font_01_sfnt_off0000e09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09D 10632 bytes
SHA-256: c1948ff8b25ffe5f7aeeb216532eabd008c907df9908115f2089b66a627b6056