Malicious PDF — malware analysis report

Static analysis result for SHA-256 c28d3a28ac6062fe…

MALICIOUS

PDF

81.2 KB Created: 2021-02-15 18:14:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2c3f98848dfb07749e0dff81a154ed15 SHA-1: 1fe75e866773b0fc3166b1e3cefe29800c602fd4 SHA-256: c28d3a28ac6062fe490158b45a403fe11605ce7f4ad82e5d15ad7f8c742510d0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://baarspo.ru/wix?keyword=lazy+boy+recliner+parts+diagram PDF link annotation
    • http://nepufikusugepa.iblogger.org/sulasikawel.pdfIn PDF document text
    • https://cdn.sqhk.co/vatuliwa/WhfjaiN/new_ringtone_2019_song_mp3.pdfIn PDF document text
    • https://lakubamovoto.weebly.com/uploads/1/3/0/7/130776542/bidelotobuw.pdfIn PDF document text
    • https://pemejelusapi.weebly.com/uploads/1/3/1/3/131398576/3d907e667a8e.pdfIn PDF document text
    • https://xatuguje.weebly.com/uploads/1/3/1/8/131856293/pitivimujariker-vojufuk-pomodiwuvus-tulul.pdfIn PDF document text
    • https://cdn.sqhk.co/difanemifal/eSjg8ha/spirit_saga_eggplant_escapade_pc.pdfIn PDF document text
    • https://pigulanofalo.weebly.com/uploads/1/3/1/4/131406379/pekimi-nejok.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/idsgigd/xozuxileluj.pdfIn PDF document text
    • https://futinubub.weebly.com/uploads/1/3/5/3/135328842/mukefat_xevekedadu.pdfIn PDF document text
    • https://vivuguduwidu.weebly.com/uploads/1/3/2/6/132681484/vorewedo.pdfIn PDF document text
    • https://cdn.sqhk.co/kepebeso/T4KjFaM/jesaxafajelesajeza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojovosis.rf.gd/love_whatsapp_status_malayalam_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/vampire_diaries_character_quiz_answers.pdfIn PDF document text
    • http://xuxobijeno.epizy.com/vutil.pdfIn PDF document text
    • http://tepuvat.epizy.com/56276972557.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/aprendizajes_clave_secundaria_educacion_fisica.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/27024020678.pdfIn PDF document text
    • http://tixuxunu.epizy.com/butibivawit.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_off0000fdb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB2 5628 bytes
SHA-256: 2e8a68171e5189cdc37a88b0f8483e1058d20a88773c5597ed596e97c5442d85
font_01_sfnt_off000110cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110CB 11424 bytes
SHA-256: 7379701fe4ea048c7c21cb0aee72c6bf550c335946433c3ffe398a06b8b75033