Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1f2fe05fb846b6…

MALICIOUS

PDF

74.7 KB Created: 2021-03-03 20:46:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: d7dded1b4dd740f2061f40d00781fe13 SHA-1: 30dccc8a7da11b2e62f3cd2f9fe033ba1f4e3fa9 SHA-256: 2f1f2fe05fb846b67490e62095deed123417784af78520265dec5193946b382b
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged as a link farm. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to potentially malicious content or phishing sites, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://mezovuduw.ru/123?utm_term=the+trials+of+apollo+book+3+characters PDF link annotation
    • http://qqkaxes.xyz/zokixofek9bt.pdfIn PDF document text
    • http://gibelineg.sportsontheweb.net/is_highschool_capitalized.pdfIn PDF document text
    • http://fukoxonezadanom.22web.org/sony_blu_ray_player_bdp_s3700_manual.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/90361197504.pdfIn PDF document text
    • http://zajawezexefijuk.22web.org/november_2019_calendar_template.pdfIn PDF document text
    • http://baugroup.info/video_mael_bukan_kaleng_kalengjjss2.pdfIn PDF document text
    • http://mozobadijoba.medianewsonline.com/ashton_kutcher_movies_on_netflix.pdfIn PDF document text
    • http://ig-verifiedsbadge.com/powerpoint_presentation_about_myself_for_job_interview_ppt_templateqey23.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/dresden_files_short_story_order.pdfIn PDF document text
    • http://idealicaufficiale.website/jirotuzapwd68.pdfIn PDF document text
    • http://muvirire.22web.org/quimica_inorganica_catherine_housecroft_portugues.pdfIn PDF document text
    • http://reduslimitalia-ufficiale.site/buzz_cut_fade_guidexwei3.pdfIn PDF document text
    • http://gbo.guru/7688518258b0xxb.pdfIn PDF document text
    • http://stixlife.info/mass_spectroscopy_applicationu7amm.pdfIn PDF document text
    • http://how2clever.com/kusuxonamnp90x.pdfIn PDF document text
    • http://podcard2020.site/gazimonuwovolumerusebawoghflkj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ginowane.onlinewebshop.net/jobalawugezusemagudo.pdfIn PDF document text
    • http://suboxasolu.rf.gd/apoorva_kannada_full_movie_free.pdfIn PDF document text
    • http://wesukaxibofawu.epizy.com/bufusoniwatogeletunuduvir.pdfIn PDF document text
    • http://bipedok.epizy.com/81589830371.pdfIn PDF document text
    • http://jufamupubo.epizy.com/86239485163.pdfIn PDF document text
    • http://toramowajo.epizy.com/wugusidi.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_off0000e53b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53B 5420 bytes
SHA-256: dba7b705ce49399398952bc3a9911f9505995970ba4187400e527feea7f984e4
font_01_sfnt_off0000f79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79D 11300 bytes
SHA-256: e5ec31a31e28a5c9cfe0a55d9ceb5d09117de9611ce519a6e658adfb5bf81219

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