Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbe08dfc3858c61…

MALICIOUS

PDF

69.7 KB Created: 2021-04-06 02:08:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9d5ff01d12e6113d10bf9197463afbb SHA-1: e4942fa5e8a4920bfd9865286e353b60dc67c199 SHA-256: 3dbe08dfc3858c61720cca1f7c799e594ccc89405067a6b1d603f5e1cdfa76bb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or a distribution mechanism for malicious content. The document body, though heavily obfuscated, contains metadata related to 'anime tv apkpure', indicating a lure to attract users to potentially malicious websites. The presence of multiple external URIs and a high ML classifier score strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/123?utm_term=anime+tv+apkpure
    • https://cdn.sqhk.co/xolilipedeko/RCryUig/elements_for_design_colorado.pdf
    • http://boketizabujig.scienceontheweb.net/51682910926.pdf
    • http://babysampler.com/kuzivakd9cv.pdf
    • https://cdn.sqhk.co/bamewimoxatu/gcliiii/rutimatokijeteganex.pdf
    • https://cdn.sqhk.co/gogojelawov/avggThd/riruwubumivo.pdf
    • https://cdn.sqhk.co/retagigimusa/dAjjgeG/70755633432.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • http://activa-fb.com/113194536721rv7q.pdf
    • https://cdn.sqhk.co/kikutajaz/iXiaibB/devivovizojenu.pdf
    • http://fastcreditreport.info/non_verbal_reasoning_practice_test_17skuf.pdf
    • http://midarujiwuvi.mygamesonline.org/how_to_reset_a_fx-115es_plus_calculator.pdf
    • http://mosquito.codes/pinizovawipovabomawowugowifrbv.pdf
    • http://affilateapp.online/speed_queen_washing_machine_good_guysfozqx.pdf
    • http://yourbigdick.space/probabili_formazioni_sportmediaset_3_giornatalgmca.pdf
    • http://zebiripu.mygamesonline.org/8419921963.pdf
    • https://cdn.sqhk.co/lovolipeg/8CMgcie/phonics_sounds_worksheets.pdf
    • http://soldatskaya6.ru/dailymotion_no_ads_apkmkbv8.pdf
    • https://cdn.sqhk.co/gapebeve/gjGziez/vr_spaceship_game.pdf
    • http://lnstagramcopyrighthelps.com/top_10_gangster_games_androidqkhfo.pdf
    • https://cdn.sqhk.co/dotusabu/gihbljj/suppository_for_hemorrhoids_walmart.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3c8d80e7-2998-4b53-b1db-ea2053e4eee2.filesusr.com/ugd/5c8c55_43025d2b27d84489a73e0f3fc846f57d.pdf?index=true
    • https://56352102-112a-4456-a677-0775450c4ed3.filesusr.com/ugd/ed4e87_a48336774df643b697e634f1dd7b0dea.pdf?index=true
    • http://todiwefexoneb.atwebpages.com/arteries_capillaries_and_veins.pdf
    • http://nivuzujanux.myartsonline.com/nujukudexepesefe.pdf
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_af888cbfcb6f42848c037740985e55f2.pdf?index=true
    • https://3b1a0cff-dc54-4917-88c1-cdf904a8db56.filesusr.com/ugd/60aab8_3535e98db1ab45f0a7da67daa1c2715b.pdf?index=true
    • https://8c4778c4-ed17-4cf1-86f9-5448e21c5c15.filesusr.com/ugd/6da380_f90075f59c7541dab0be2aabe19fcfc9.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d2.bin
5de1436ade931c98abd2ad8c7e81cf588ad70f752a0e8b98b7e8954fc6babdf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D2 4868 bytes
font_01_sfnt_off0000e354.bin
8df7618aa7377154b7d40e7ba33a48d98dd62822269a8d0db0ddfb528cf3a2b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE354 11036 bytes

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