Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a8a4c98c7bec926…

MALICIOUS

PDF

65.8 KB Created: 2021-02-13 00:04:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1e28c568e7affc54ed161fe83c9ffdb5 SHA-1: 081728ba47a8a8f99d144da52fe285f6e01a64f7 SHA-256: 8a8a4c98c7bec926c4f9800e14dea2a380ff7ff65aecf847e8a4c028f348685d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=canvas+rider+unblocked PDF link annotation
    • https://cdn.sqhk.co/telupiza/E6hiiwe/92191729039.pdfIn PDF document text
    • http://podeves.xyz/mario_kart_tour_multiplayer_ranking_systemc2oeo.pdfIn PDF document text
    • http://storeyou.store/xukatakujok37mm1.pdfIn PDF document text
    • http://copyright-services-us.com/kezigozigibikusexonasosua8gf8.pdfIn PDF document text
    • https://cdn.sqhk.co/miseseren/ff1bFsA/23798391524.pdfIn PDF document text
    • https://vabeluzaxudi.weebly.com/uploads/1/3/4/8/134884936/jilizedet_fididotamapelum_nejerapozova_xipimutik.pdfIn PDF document text
    • https://mepogazab.weebly.com/uploads/1/3/4/5/134501519/4de6ee22cec8756.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/NCihxgg/consulting_interview_math_problems.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/hggzij3/sad_anime_wallpapers_1080p.pdfIn PDF document text
    • https://cdn.sqhk.co/rabuvimi/pzGhcns/azarenka_coach_us_open_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zedazisem/mqjepPo/julibidigopadaginusozuzo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465010/normal_5ff1f92cbfcc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/towakog/at_last_beyonce_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/tumufofuvijunelafasuvud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8F6 5020 bytes
SHA-256: dfc7ee8476b59566f6438a074aa2de7cea19105e209f468c61f9d2a0c5f33d26
font_01_sfnt_off0000ca07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA07 10152 bytes
SHA-256: ff8752d5f514ea8c374116f4c866415cf54581481d870bb3d0faf7a08cad217c
font_02_sfnt_off0000ecbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBC 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378