Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbfe5c7e7a7ac8a7…

MALICIOUS

PDF

72.9 KB Created: 2021-02-12 01:51:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 483fc21be3da0188c61cdd195f323961 SHA-1: 4b2a8e904c8f03a53600520cf1a677a062a905d7 SHA-256: cbfe5c7e7a7ac8a7ecf9b1151bf83dadbfbe93258eb2116a3eedd56e72f8d21f
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://leonvi.ru/wix?keyword=dark+incursion+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409246/normal_5ff0e8751b9a7.pdfIn PDF document text
    • https://motutipe.weebly.com/uploads/1/3/4/6/134674000/roraluvuza_zeninumosotitod.pdfIn PDF document text
    • http://magnetfix.store/sci_hub_books7rwl9.pdfIn PDF document text
    • http://uablog.website/basketball_stars_mod_apk_freeqvvmg.pdfIn PDF document text
    • http://metalllift.ru/fetepoxelizelofiltdae.pdfIn PDF document text
    • http://cg-designer.xyz/evermotion_archinteriors_vol_33_freegygdu.pdfIn PDF document text
    • http://tb-films.ru/xusikilaniwewobofim05o76.pdfIn PDF document text
    • http://bigswinner.space/100654340762dock.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367914/normal_5fce62062b186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475728/normal_5fe8bdd62e916.pdfIn PDF document text
    • http://study-english-05.site/famiwizewfjvf5.pdfIn PDF document text
    • http://floradoma.net/donne_nous_ton_fils_partitionsi2ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zaxalamel.rf.gd/happy_anniversary_name_cake.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_off0000e225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE225 4960 bytes
SHA-256: 8a4f623a034733a2702cba2063555103e520766933cf8c67217b5ceee0881e2d
font_01_sfnt_off0000f31e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31E 10448 bytes
SHA-256: b9b03e16936835b0c14e49bbec27cdaa504ea9bb7260be22533ef04e48ffc383