Malicious PDF — malware analysis report

Static analysis result for SHA-256 b37a7eca48407bba…

MALICIOUS

PDF

73.1 KB Created: 2021-02-20 09:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 83d94f56d5d3ed25018084bee281078e SHA-1: 53da23515b4edc0eeded6f2c8886f64b61cb9c51 SHA-256: b37a7eca48407bba7b3a052282a8e286422f15b46a373da875e58bda539a1fd1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/wix?keyword=chef%2527s+choice+manual+knife+sharpener+walmart PDF link annotation
    • https://cdn.sqhk.co/zarepowake/hUhhimi/dot_to_dot_puzzles_for_adults.pdfIn PDF document text
    • http://olymp-trade.top/golf_with_friends_steam_guide91imw.pdfIn PDF document text
    • http://toteganutiv.66ghz.com/panasonic_kx-tga939t_headset.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/fihGhad/blossom_blast_saga_full_version_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/k8IhjCL/fallout_shelter_cheats_ps4.pdfIn PDF document text
    • http://consequences.space/levifakuswxrj.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/koliform_tinja_adalahuwemq.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/e8S3NR8/best_tour_guide_for_switzerland.pdfIn PDF document text
    • http://italywow.space/fishing_report_keaton_beach_florida6zuk1.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxogatuv/VhhX9gg/social_intelligence_definition_for_dummies.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/jcoibjj/85677267465.pdfIn PDF document text
    • http://hytri.com/73229741029ti247.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412606/normal_601e734b16df6.pdfIn PDF document text
    • https://cdn.sqhk.co/fofanibiv/jbnighe/play_with_cats_london.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/XhhWXje/download_robot_superhero_champions_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/toruwapelot/jfBgfSi/ragerukoretataj.pdfIn PDF document text
    • http://ig-objectionform.com/88822837673d7dgi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bubopewufifinov.epizy.com/55302119193.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_off0000e21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21F 5348 bytes
SHA-256: 6f132f4c2a121c3ebfba48077f96ee1f7bb6b570e312a83088f1f88bb1e7ad57
font_01_sfnt_off0000f43a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43A 10216 bytes
SHA-256: b813f87aa48e26be0672bafbea268f2e7667c1baf3253d6d26b16ec620e34c38