Malicious PDF — malware analysis report

Static analysis result for SHA-256 482fc5af3fe44cb0…

MALICIOUS

PDF

81.4 KB Created: 2021-04-01 22:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 286af36b3147573e20fe4e17c9f79a6f SHA-1: e4c8d3e199cf68afa56acfe46a69e8e17b776b7b SHA-256: 482fc5af3fe44cb049549d1b423363d6fed54d0b7bfdded845708813dc41fa5e
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1055.012 Process Injection T1190 Exploit Public-Facing Application

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged for brand-impersonation credential phishing targeting Netflix. It utilizes a link farm and multiple disposable hosting domains, including a Weebly subdomain, to redirect users to malicious content. The embedded URLs and the nature of the heuristics strongly indicate a phishing campaign designed to steal user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://likufuzojelawaf.weebly.com/uploads/1/3/5/2/135298946/tixajutepi.pdf.
  • 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://seumenha.ru/strik?utm_term=does+roku+premiere+support+screen+mirroring PDF link annotation
    • https://likufuzojelawaf.weebly.com/uploads/1/3/5/2/135298946/tixajutepi.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • https://bilagezapa.weebly.com/uploads/1/3/1/1/131163658/13b63cb9b25884.pdfIn PDF document text
    • http://cabinetsop.xyz/skinnytaste_air_fryer_cookbook_ww_pointsb6ukc.pdfIn PDF document text
    • http://wupuluku.22web.org/womiri.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/fifakedodabemiwpx0.pdfIn PDF document text
    • http://ketadiets.site/rareketisikegenuzuwuk1h1np.pdfIn PDF document text
    • http://dompodklyuch.com/the_twilight_saga_breaking_dawn_-_part_2_online_subtituladaasqo8.pdfIn PDF document text
    • http://vzruvayarttraff.xyz/homemade_vanilla_ice_cream_recipes_with_evaporated_milk4sty3.pdfIn PDF document text
    • http://sellforce.ru/performance_comparison_chart38f8e.pdfIn PDF document text
    • http://republvinb.fun/example_technical_requirements_document_templatehvx9z.pdfIn PDF document text
    • http://stav-games.ru/mysql_workbench_6.3_tutorial8vfpg.pdfIn PDF document text
    • https://nogigeto.weebly.com/uploads/1/3/4/6/134665346/2551245.pdfIn PDF document text
    • http://baby-slings.ru/horror_wallpapers_for_mobile_phoneszgwm1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://depexezopip.epizy.com/25465965559.pdfIn PDF document text
    • http://sunemixawuvija.epizy.com/chinese_keyboard_apk_free.pdfIn PDF document text
    • https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_0954d07b6d994152aa615111760c9bb4.pdf?index=trueIn PDF document text
    • https://c02a3fa2-970f-4384-b4fa-7a60184a1b73.filesusr.com/ugd/1da3fe_3e7fbd0acd1e460bb96a020e8d93918d.pdf?index=trueIn PDF document text
    • http://ronarag.epizy.com/tableau_de_karnaugh.pdfIn PDF document text
    • https://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_b710281cf68c49e29fa4a843e7a820c5.pdf?index=trueIn PDF document text
    • http://gagolugumetuvo.epizy.com/sample_customs_declaration_form_usa.pdfIn PDF document text
    • http://xajamojepoz.rf.gd/bible_apk_offline_kjv.pdfIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_d4884c84e8fe4059847bd1ee41a55911.pdf?index=trueIn PDF document text
    • https://1ffb5d6c-d890-49e0-9b87-dc10fbfa49e2.filesusr.com/ugd/8bc2a6_f3a12be5caba49f08df83ab804d441b8.pdf?index=trueIn PDF document text
    • http://pisarojimogite.epizy.com/guvulov.pdfIn PDF document text
    • http://losikamadan.epizy.com/trustee_act_2020.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_off0001002e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1002E 5072 bytes
SHA-256: c9404c5dc4a24ce92b4bc92b5fd6504229ba1e3489285c51c10d39d62bb25ddd
font_01_sfnt_off0001116e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116E 11204 bytes
SHA-256: 12b288338f08e2f4c875bcbaec27195bd073c376cea535da579ba23fe5ef89b4

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