Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a2eac27d6f8b58a…

MALICIOUS

PDF

71.1 KB Created: 2021-02-24 15:25:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e6bd96e156c33e026732f3003af62033 SHA-1: c1967f500f6e87ffc5dca5140d08ad4a5581859a SHA-256: 4a2eac27d6f8b58abeb49b956c37563f52af16010144fb352ece553b349537bf
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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=g-shock+rangeman+gps+navigation+watch PDF link annotation
    • https://vavawuzozut.weebly.com/uploads/1/3/1/1/131163550/8984148.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497082/normal_5ff514c21cc16.pdfIn PDF document text
    • http://mamunetosi.iblogger.org/41606894954.pdfIn PDF document text
    • https://cdn.sqhk.co/rubuxupab/hjb1T4n/subway_surfers_rome_java_game_download.pdfIn PDF document text
    • https://buwuwewofopalun.weebly.com/uploads/1/3/4/0/134097592/sajirelosufemot.pdfIn PDF document text
    • https://koruguliduni.weebly.com/uploads/1/3/4/8/134896859/zatitopelufamar.pdfIn PDF document text
    • https://xoxekoxezugox.weebly.com/uploads/1/3/0/7/130738790/fedutenisaxoxi_simowabosedama.pdfIn PDF document text
    • https://cdn.sqhk.co/sarimotel/YZjaiht/dungeons_and_dragons_online_armor_class.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408587/normal_6027068b2e188.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/idiihcN/we_are_crossing_the_river.pdfIn PDF document text
    • https://vizosajigu.weebly.com/uploads/1/3/1/3/131381839/b8e8dd5.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/ApwheBt/33208412897.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/HhghNnx/extreme_suv_driving_simulator_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lavavil.rf.gd/67754322348.pdfIn PDF document text
    • http://balazetesu.epizy.com/trading_company_logo_templates_free.pdfIn PDF document text
    • http://motatowavem.epizy.com/free_annual_credit_report_government_website.pdfIn PDF document text
    • http://pekanob.rf.gd/vibiziruz.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_off0000d7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AF 5596 bytes
SHA-256: bd68cda4589738c2712f63469751e2e3e81bc1d92439939642a69ba57a0fff9f
font_01_sfnt_off0000eaaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAF 10660 bytes
SHA-256: 2ec37d2db377cb00d62d71fe5741186571df62476b2bc364d5580c7e18fa389f