Malicious PDF — malware analysis report

Static analysis result for SHA-256 c83f2285179d1f05…

MALICIOUS

PDF

71.2 KB Created: 2021-02-25 07:12:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c69fb32a9009f6d61fe10825b22bfa19 SHA-1: d7d8fbdedf14b6d892f42090c8f95bd6e510f5d2 SHA-256: c83f2285179d1f0576732f062b3eb545530d7502e28be6686bab2bb3075ee65e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/award?keyword=what+is+hair+theory PDF link annotation
    • http://wijetaz.mypressonline.com/resumen_del_libro_platero_y_yo_para_nios.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/92565753161.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/fJ9hcPA/75932841645.pdfIn PDF document text
    • https://cdn.sqhk.co/mitukutowum/mugdiaO/radio_rock_online_classic.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477379/normal_5fd0846dc9a39.pdfIn PDF document text
    • https://cdn.sqhk.co/wazilisiko/fqnHIhf/horse_riding_games_online_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/gegfigr/78269952741.pdfIn PDF document text
    • https://kugarinunixi.weebly.com/uploads/1/3/0/8/130813781/6147741.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/critical_analysis_of_the_lottery_by_shirley_jackson.pdfIn PDF document text
    • https://daxejinuvu.weebly.com/uploads/1/3/4/6/134645798/lakat_joxuje.pdfIn PDF document text
    • https://tusuwijajibu.weebly.com/uploads/1/3/4/5/134517525/3143173.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454435/normal_6031552c3818a.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/kozibowisenatu/bind_parameters_in_oracle_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/personajes_principales_de_la_obra_aves_sin_nido_de_clorinda_matto_de_turner.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/the_vampire_diaries_klaus_imagines_tumblr.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/muxepifunele.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_off0000dd33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD33 4856 bytes
SHA-256: 82dc99dc5235d3606ae3f89839b2b8ed77f4744924b36c3535e7742222c1a718
font_01_sfnt_off0000edc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC1 10160 bytes
SHA-256: 476ebff13af1e3f64b5ed9eea088684c7b46b4bbcfec81c74ae0ddf8bfb4f8fb

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