Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa246938675f835…

MALICIOUS

PDF

72.3 KB Created: 2021-02-27 01:56:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1ef96241f48c0000af81f87c44713ad4 SHA-1: 305df6e7e7fc40f364124126d702c4a3e892055e SHA-256: 1fa246938675f83559fe4640311407a5f13bb1189430c7bf319c8facc1f147e1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/award?keyword=bosch+silence+plus+44+dba+error+24 PDF link annotation
    • https://cdn.sqhk.co/vidoperife/d3QLifl/free_police_siren_ringtones_for_my_phone.pdfIn PDF document text
    • http://kaxiwemusemoj.mypressonline.com/autocad_commands_stopped_working.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/hdAnAhc/ribetisaxebilobutajipuwa.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/city_of_thieves_book_amazon.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/deer_predation_or_starvation_answer_key_quizlet.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/what_temperature_should_my_whirlpool_fridge_be_at.pdfIn PDF document text
    • https://nijuvijoz.weebly.com/uploads/1/3/1/4/131408832/4279439.pdfIn PDF document text
    • https://bapuporodotuxo.weebly.com/uploads/1/3/1/3/131381531/dozotegika.pdfIn PDF document text
    • https://cdn.sqhk.co/vemupanilow/gdibOph/colorful_world_map_canvas.pdfIn PDF document text
    • https://cdn.sqhk.co/wofunukasu/Yq7jbhK/5306604342.pdfIn PDF document text
    • https://rinezafuwokof.weebly.com/uploads/1/3/1/4/131437641/e97c1db8.pdfIn PDF document text
    • http://finipupote.mywebcommunity.org/sansui_lcd_tvs.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/yie4Ige/tomb_raider_movie_2018_review.pdfIn PDF document text
    • https://cdn.sqhk.co/kikutajaz/hbgjsug/62829467145.pdfIn PDF document text
    • https://gufovijer.weebly.com/uploads/1/3/5/3/135339237/2756400.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dudijujixafag.rf.gd/accident_reports_elyria_ohio.pdfIn PDF document text
    • http://bexituxupogetav.rf.gd/33895082158.pdfIn PDF document text
    • http://rususekobijo.myartsonline.com/what_is_intellectual_property_all_about.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_off0000de4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4C 5568 bytes
SHA-256: f3d6aa993b2fb60805b23bc0187603b1bc126840f944d062aff44de752c7d07d
font_01_sfnt_off0000f134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF134 10184 bytes
SHA-256: 608dbd8839245fad9b3cd9d9158b013b3301a5c2019574a50b228b1bcfe4fb03

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