Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87619a4b5cec595…

MALICIOUS

PDF

71.7 KB Created: 2021-02-23 18:51:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3abe719fa929dda914dd4518f0c3ee7a SHA-1: e073ab6a92fca22157396a691d94f026d2d8a17d SHA-256: a87619a4b5cec5955d635af2b1bc0d01606eb5d87bf671104097dd966be06e18
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=nova+launcher+apk+download+apkpure PDF link annotation
    • http://thecabinets.xyz/39567724816jnnql.pdfIn PDF document text
    • http://drive4mclaneaustell.com/how_to_build_a_viking_axeivj7w.pdfIn PDF document text
    • https://lotefexikig.weebly.com/uploads/1/3/4/0/134097130/a882f2b.pdfIn PDF document text
    • http://usacreditscore.info/62437969846lnugh.pdfIn PDF document text
    • http://kefowawud.22web.org/vipulevezakuluxowifusaza.pdfIn PDF document text
    • http://springtea.space/sudoku_puzzles_very_easy_9x98e0cb.pdfIn PDF document text
    • http://greenbike.shop/xifelujuloxezivudovaverer1omp.pdfIn PDF document text
    • http://kadesevi.iblogger.org/sunflower_cissp_cram_study_guide_2019.pdfIn PDF document text
    • http://kebotup.66ghz.com/fixonizegop.pdfIn PDF document text
    • http://interior.estate/how_many_questions_in_frm_level_1835q9.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/jatAyhi/76618640754.pdfIn PDF document text
    • http://kasijeran.iblogger.org/1080p_video_er_online.pdfIn PDF document text
    • https://jedewudozoj.weebly.com/uploads/1/3/0/7/130739070/lonujogibiw.pdfIn PDF document text
    • https://cdn.sqhk.co/perikowep/aPsggMf/weekend_deals_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/dcjhFWT/corrugated_box_manufacturers_in_southern_california.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/marketing_digital_cursos.pdfIn PDF document text
    • http://xuvemotoguno.epizy.com/la_casa_de_los_espiritus_personajes_caracteristicas.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_off0000dd5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5A 5168 bytes
SHA-256: 96c869dc0a7160cf3af6ec42227a4b3ee6b40513d2af6a833a4f310a2075526e
font_01_sfnt_off0000eefe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFE 10192 bytes
SHA-256: 91b1f6994a1a879e39bb580f83deff6ce0055efbffff8e15b686a6a1b1815686