Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff11e3ec0d11233…

MALICIOUS

PDF

71.0 KB Created: 2021-03-15 23:33:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2023-12-28
MD5: ae8d9730b528503782ce7370d8948298 SHA-1: 31ef5dfed7f1cf561635bc91add94771ed24f6ab SHA-256: eff11e3ec0d112332498780bbdf6bfcff43231874aa2dd7731c8924b8fda7e40
151 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://leonvi.ru/123?utm_term=application+format+for+teacher+in+school PDF link annotation
    • http://blancer.xyz/himno_nacional_mexicano_letra_en_nahuatl_y_espaolvlse6.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/herobrine_minecraft_pe.pdfIn PDF document text
    • https://cdn.sqhk.co/luwesefizi/hjjjgex/top_100_old_bollywood_songs_free_download.pdfIn PDF document text
    • http://bukuxojunuz.mypressonline.com/seagate_goflex_home_default_ip_address.pdfIn PDF document text
    • http://oneplusonemain.xyz/7th_grade_math_angles_worksheetsffd3o.pdfIn PDF document text
    • https://cdn.sqhk.co/gixezovof/RNPrWic/snow_mountain_ranch_colorado_images.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/hihiQAM/rebirthing_skillet_az_lyrics.pdfIn PDF document text
    • http://vukabuv.22web.org/assignment_abroad_times_17_august_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/what_are_the_hardest_interview_questions_to_answer.pdfIn PDF document text
    • https://cdn.sqhk.co/lerutefo/5SMCkgg/bimebulemizogat.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/how_to_use_excel_multiply_formula.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/2759173612.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/zuxonizenokateten.pdfIn PDF document text
    • http://wspring.space/527627454799ivcj.pdfIn PDF document text
    • http://fakurivevid.scienceontheweb.net/usmle_rx_first_aid_step_1_express_video_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/nietzsche_twilight_of_the_idols.pdfIn PDF document text
    • http://kewotij.mypressonline.com/60526185733.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000d8bd.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000d8bd.bin)
    • https://uploads.strikinglycdn.com/files/3e6a3bd4-42dc-455f-bbb9-23939426c606/40913308051.pdfIn PDF document text
    • http://xejonitofopim.epizy.com/fumaxolatosumike.pdfIn PDF document text
    • http://rinexijirava.rf.gd/what_foods_are_complex_carbohydrates_found_in.pdfIn PDF document text
    • http://jifupupuf.epizy.com/bhojpuri_full_movie_2018_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad736d9-4d9e-405e-8320-b44056a8f7fc/air_force_one_cast_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84978152-ed30-4f74-afbe-114b98d38f4f/simple_probability_worksheet_7th_grade.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/70760347616.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 extracted file (font_00_sfnt_off0000d8bd.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BD 5244 bytes
SHA-256: 9b3db34ef2b20ce7cd967ad98165c53cf88c5c58945b90b29c7be82d9db37422
font_01_sfnt_off0000ea6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6D 10432 bytes
SHA-256: f27afd5bb1a92e0d6ab96e7e66d029a7d786dea7d375e1b353e957f8d29dee26