Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dcb8407c229d2e3…

MALICIOUS

PDF

71.5 KB Created: 2021-02-28 07:16:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4608b1d7bf21cc57b5cbf0c52f90707d SHA-1: 22da85ca33316e6fd02dcef3f4aa27a18909992b SHA-256: 3dcb8407c229d2e381d080578ff1f3bc3b8b6ab3796044a310b2f20dba6d31fe
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/award?keyword=clock+face+template+without+hands PDF link annotation
    • https://cdn.sqhk.co/bewewojiwo/cjjhlig/13241110836.pdfIn PDF document text
    • http://setomomenoku.22web.org/bofoligituxowamexozoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413976/normal_5fdb3fd704f37.pdfIn PDF document text
    • http://wapotod.22web.org/53117884434.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/jghjU1H/nfl_network_on_youtube_tv_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/kitobanifamo/Whegihb/wolebaligis.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/XHgehdh/fly_exeter_to_belfast_city_airport.pdfIn PDF document text
    • http://dabuvede.66ghz.com/48451234258.pdfIn PDF document text
    • https://cdn.sqhk.co/gosuzufus/dF2Ngef/english_stories_for_beginners_mp3.pdfIn PDF document text
    • https://cdn.sqhk.co/delojiwuguj/twA1Phc/android.pdfIn PDF document text
    • https://cdn.sqhk.co/pajelidul/jcgii5h/mobile_dth_broadband_plans_bangalore.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/nQzVjg5/gsmarena_samsung_a71_5g.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/ZOO0iiP/transfer_station_dump_fees.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426676/normal_5fda17a1e1ea2.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/ieYnidp/gunivexigixu.pdfIn PDF document text
    • http://milafikolume.iblogger.org/best_civilization_games_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406228/normal_600450a1e1760.pdfIn PDF document text
    • https://cdn.sqhk.co/kidirugolo/fhaWiiJ/80106285272.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://badizep.epizy.com/bernette_500_deco_embroidery_machine_manual.pdfIn PDF document text
    • http://libuninudavek.rf.gd/video_making_app_for_android_free.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_off0000d921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD921 5360 bytes
SHA-256: 4fce2854511012367cec43aff73e643aa9a2bde0da6b033b399abd42fc16ccef
font_01_sfnt_off0000eb50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB50 11320 bytes
SHA-256: 7b96a0f416cf1c7b8dc27615520aa57fb16b125e054f265bd2b32468d425e9d5

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