Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc05cbbe1529595…

MALICIOUS

PDF

70.8 KB Created: 2021-02-18 00:57:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f98b82b6fcaf41277e0ce0cd1422feb9 SHA-1: 9a8360d5c57c6316bb35e51e3c2104690e41861e SHA-256: adc05cbbe15295958a8d0785b58fbe5c8bdf1353f42b23b590d2195139638a3f
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://yafferge.ru/wix?keyword=elkview+middle+school+bell+schedule In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446923/normal_5fda372688b35.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/wgfCRmu/christmas_bucket_list_film_cast.pdfIn PDF document text
    • http://begemot.space/download_game_last_pirate_survival_island_adventure7hvis.pdfIn PDF document text
    • http://madewithsunshine.com/cdma_in_mobile_computingb7viq.pdfIn PDF document text
    • http://nuveclovet.xyz/ahimi_adaraya_songp4vx2.pdfIn PDF document text
    • http://experiment.website/ikea_advertising_strategylnyxb.pdfIn PDF document text
    • http://agentsoft.space/9740371671vkj9e.pdfIn PDF document text
    • http://azules.ru/molarity_by_dilution_worksheet_answersgp0ka.pdfIn PDF document text
    • http://dronextactical.xyz/jigovipizinaxofadonugila6ds2p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446494/normal_5ff7aad55f9c2.pdfIn PDF document text
    • http://sexedate69.site/balin6wejg.pdfIn PDF document text
    • https://cdn.sqhk.co/makulowujip/0XQjdgc/remix_to_ignition_ukulele_chords.pdfIn PDF document text
    • https://cdn.sqhk.co/mikakiraw/pV0rSjb/velodyne_lidar_inc.__vldr.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/TDjdhgh/rijoridipi.pdfIn PDF document text
    • http://about-igsupport.com/mejedujepuwatusuwukixoroveqezo.pdfIn PDF document text
    • https://cdn.sqhk.co/birugafomafo/ghIBBgh/fly_to_hawaii_from_houston.pdfIn PDF document text
    • http://mainsale.pro/rufujoxojalosinisogutlj2o.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/iggOQgc/nojijivipi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375070/normal_602d8744567e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD876 5188 bytes
SHA-256: 95776d1b63362475c0e741ff7d072e58588967ca5e1b97bf1a336d1c60d71477
font_01_sfnt_off0000ea13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA13 10424 bytes
SHA-256: 5740819a725bd3291ea8b12d4f5219830c31e69c83979397f048506fc5671bd4

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