Malicious PDF — malware analysis report

Static analysis result for SHA-256 76848db8e4ff5e7e…

MALICIOUS

PDF

71.6 KB Created: 2021-02-26 11:00:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7c5b12350a9f2287fd313e41ab29c3e7 SHA-1: f2bdebdd1c6fd3c2f3c6e428fa7d42d9c5d6dd8a SHA-256: 76848db8e4ff5e7e7ef18347fb049c2524660d8a1ef6a0d4625196c13084c5a5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/award?keyword=why+is+my+fire+alarm+beeping+with+new+battery PDF link annotation
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/xuxalezirame.pdfIn PDF document text
    • https://cdn.sqhk.co/jigixomavola/Vghhdjg/91938052306.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/biwogalekesip.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/372445333.pdfIn PDF document text
    • http://vienvozvrat.site/69316821177ykfw1.pdfIn PDF document text
    • https://cdn.sqhk.co/resozasevej/gghiehi/rally_car_driving_experience_uk.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/tevubem.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/5uiQic7/nativity_of_jesus_christ_script.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/jhgepyA/mma_underground_gracie_barra.pdfIn PDF document text
    • http://top-agent.ru/24831482241taepv.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/ogcxgdB/mayrushart_real_age.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lumosaneja.onlinewebshop.net/aew_revolution_uk_results.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/71316343054.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/brinkmann_smokers_website.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_off0000da8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8B 5664 bytes
SHA-256: 027d319b856f79189831bb073c8a5964be66d8cde8121403503c6095073ac264
font_01_sfnt_off0000edc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC8 10488 bytes
SHA-256: b3b7f63de638d30e784b5e5a639b8fc130f5a544910cafae29c716e700600a85