Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c2af8ed639b8186…

MALICIOUS

PDF

70.7 KB Created: 2021-03-03 03:37:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 75c5e66c1bd091f563c905b14aa48143 SHA-1: 6de581309e1eef1dd03db257a326c1e56994f7dd SHA-256: 4c2af8ed639b8186f775d4513ba1a39461927178aa26574d0aea59a722913175
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://nipisod.ru/wix?keyword=vocabulary+workshop+level+e+unit+1+answers PDF link annotation
    • https://toraboretopupu.weebly.com/uploads/1/3/4/7/134769369/6657837.pdfIn PDF document text
    • https://pabarubuvu.weebly.com/uploads/1/3/1/3/131379718/noxarokukitofowe.pdfIn PDF document text
    • https://buvonumonub.weebly.com/uploads/1/3/5/3/135304713/452849.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/5ih6ifX/bonetale_fangame_v2._0._2._1_mod_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/CH5wjjY/corporate_strategy_definition_investopedia.pdfIn PDF document text
    • https://zomafada.weebly.com/uploads/1/3/4/7/134772300/bozaw_bemesenolem_semekipakul.pdfIn PDF document text
    • https://cdn.sqhk.co/kewusikata/lajfDhj/pc_adventure_games_like_monkey_island.pdfIn PDF document text
    • https://cdn.sqhk.co/zifuvifiweva/hsgdSib/31221230021.pdfIn PDF document text
    • https://fuvimufuba.weebly.com/uploads/1/3/4/8/134870364/lepevobajobor_potefema_puniritonuw_xosaje.pdfIn PDF document text
    • https://cdn.sqhk.co/fakupavod/yjhDicN/79363904191.pdfIn PDF document text
    • https://vaxatimiroxak.weebly.com/uploads/1/3/4/6/134617636/8616717.pdfIn PDF document text
    • https://cdn.sqhk.co/razefudixid/LgeAggJ/94237522889.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/aKFSMUE/ragdoll_dismounting_cheats.pdfIn PDF document text
    • https://fiwerabonu.weebly.com/uploads/1/3/4/3/134347662/tovuvuw-bevafobe.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/jixUBEk/formula_racing_2d_mod.pdfIn PDF document text
    • https://dufavepuxafolim.weebly.com/uploads/1/3/4/2/134266173/ec08ec8fd7.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/hcpji1p/make_a_list_in_r_markdown.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zumijuxuv.epizy.com/funizi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD742 5496 bytes
SHA-256: c344d105df1b0e3aa9e930d3be65e8e6987cf6965b190b3173d10de28fd5eaec
font_01_sfnt_off0000ea12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA12 10452 bytes
SHA-256: 2581a2a8d40ab5f99e8c2a6f8dceb1f663a604fdeb367f9b27dfa5f5590f9e63

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