Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fef77df673c60f5…

MALICIOUS

PDF

65.1 KB Created: 2021-02-25 03:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a718a89dcc9480109ef35cf7a8d3393a SHA-1: 062b70f5469dd2ef6e34fef5761aa93bc8284c24 SHA-256: 8fef77df673c60f5f1e0e272a8f97381ce70bfa42daa5e45c9c2886dfa1dea9e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/wix?keyword=plastic+texture+pack+minecraft+pe+1.16 In PDF document text
    • https://cdn.sqhk.co/doxurozupu/Lja5a38/temple_run_3_download_jio_phone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_601baf1d8bfc9.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/1ssUSPs/strawberry_cake_recipe_with_jello_cool_whip.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/how_to_replace_2008_honda_civic_starter.pdfIn PDF document text
    • https://cdn.sqhk.co/ferudati/hfeiivB/70863131993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492259/normal_601fb473c55a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_6029e64d31f36.pdfIn PDF document text
    • https://cdn.sqhk.co/govamopega/jOhcbcT/defender_110_300tdi_towing_capacity.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://satawakerexe.atwebpages.com/lodelevalirajopid.pdfIn PDF document text
    • http://zevusup.atwebpages.com/how_to_calculate_compound_interest_over_time_in_excel.pdfIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/ragekajaxiwele.pdfIn PDF document text
    • http://sitojedakolotil.rf.gd/fdgrx_fact_sheet.pdfIn PDF document text
    • http://pokitudid.epizy.com/35906451212.pdfIn PDF document text
    • http://sidepojedava.myartsonline.com/how_to_change_lawn_tractor_oil.pdfIn PDF document text
    • http://pujumek.myartsonline.com/french_revolution_third_estate_taxes.pdfIn PDF document text
    • http://megegadimopef.rf.gd/62688726420.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/57792484166.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_off0000c1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1ED 5532 bytes
SHA-256: 689e823bcb7bd46fe462423ee85dd77be9d30115acb76658209c4a084ccca60b
font_01_sfnt_off0000d4be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BE 10164 bytes
SHA-256: 6760a2d5fd5f1ad1e933e332555ad677883eb2f2a463b2cc274739a16e1b17d7