Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0e375b4fa367b81…

MALICIOUS

PDF

64.8 KB Created: 2021-02-14 02:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: da77811a779d9ddeb2a855031f5ae2cc SHA-1: b54c647ea1037f74a7a717bc78014f9afb24abd9 SHA-256: b0e375b4fa367b814406e855609f590a3af136ee549e621a0e2cd7a890f25a15
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=akuntansi%20pemerintahan%20deddi%20nordiawan%20pdf PDF link annotation
    • https://tukareteran.weebly.com/uploads/1/3/5/3/135307171/5853612.pdfIn PDF document text
    • https://buxodofuluni.weebly.com/uploads/1/3/4/8/134875319/517929.pdfIn PDF document text
    • https://cdn.sqhk.co/murajefovel/eZjehaw/hd_forest_wallpaper_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/zumufapofow/dyljatd/2048_cards_casual_2048_solitaire_games_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/gjehhgg/tegajemesow.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/jchhmjj/96555201537.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469834/normal_5fce56e4d9a8c.pdfIn PDF document text
    • http://geosen.net/1845363942owfc9.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/vhagiQC/ticket_to_ride_first_journey_usa_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/e7gg8dJ/best_off_road_racing_games_pc.pdfIn PDF document text
    • https://gefumugizifoz.weebly.com/uploads/1/3/0/7/130739155/3183557.pdfIn PDF document text
    • https://cdn.sqhk.co/rapekerokemo/SUOjihC/bolovukipux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369525/normal_5fe1b2260e361.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/bc0ghT9/24163968983.pdfIn PDF document text
    • https://kunimagim.weebly.com/uploads/1/3/4/6/134608209/d11a059cbc93e28.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/jimugivos/55611605420.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/kingdom_rush_origins_level_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/53895665198.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_off0000c22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC22C 5396 bytes
SHA-256: 042cb17dab66646fa525a3b059eb151511c39d07db802b0577927e3aa62da295
font_01_sfnt_off0000d46d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46D 9816 bytes
SHA-256: 1e9d51f8ac696ce9db6f4243893908f0e4f62c14c695bc81d7b5375e897a1697