Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8bb432a4c054978…

MALICIOUS

PDF

70.2 KB Created: 2021-02-11 17:40:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 864c2f487ed943284e2534a2b69e4dbc SHA-1: 00d2832f55c982b05cd53fc39f2e55c7e8ba0850 SHA-256: b8bb432a4c054978e0360eb75719b85f065f01d2a316b84e773fa4218d82d052
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://crophysi.ru/wix?keyword=design+for+electrical+and+computer+engineers+1st+edition+pdf In PDF document text
    • https://cdn.sqhk.co/disumuneriva/dhWsgdh/prime_alert_suriname_2020.pdfIn PDF document text
    • http://magnitoli-2ekran.site/60706662567h5d2y.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/bghjfoC/alone_season_6_jordan_interview.pdfIn PDF document text
    • http://petajofap.22web.org/king_size_quilt_sets_with_sheets.pdfIn PDF document text
    • http://indir-kazan.com/dopagopem4c9o.pdfIn PDF document text
    • http://sallehq.xyz/rotozadanimezeg3cavj.pdfIn PDF document text
    • http://evakuator-uga.ru/74730977891cs7xk.pdfIn PDF document text
    • https://cdn.sqhk.co/dikarulik/djdruge/gif_live_wallpaper_maker_video.pdfIn PDF document text
    • http://santecmb-sarl.com/nostalgia_critic_foodfight_tv_tropesdoxvl.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/thomas_the_train_sky_high_bridge_jump_manualm1kc1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vepuziv.epizy.com/euiv_absolutism_guide.pdfIn PDF document text
    • http://ziwebizivag.epizy.com/automatic_watch_winding_manual.pdfIn PDF document text
    • http://debetofewozuri.epizy.com/xisizavaxelev.pdfIn PDF document text
    • http://bizosubage.rf.gd/fimaxawitukipevowuvam.pdfIn PDF document text
    • http://verepuremi.rf.gd/xonamurafimonupoguwaxi.pdfIn PDF document text
    • http://muweluboxakok.rf.gd/riforma_aliquote_irpef_2020.pdfIn PDF document text
    • http://gejuzimeru.rf.gd/android_google_docs_dark_mode.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/learning_stock_market_for_beginners.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_off0000d649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD649 5524 bytes
SHA-256: d8c9a1e7577a8f4437f7c1df2af528003d416ffa68f7606615eaa77aaa66d1ab
font_01_sfnt_off0000e90e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90E 10064 bytes
SHA-256: 5504253954df9c8fb7d1d691610cb5f95eb6e9a365b2eedba9c404030649bc41