Malicious PDF — malware analysis report

Static analysis result for SHA-256 956e6e9ddb2b5a12…

MALICIOUS

PDF

84.9 KB Created: 2021-04-06 19:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c993624b4e3ee94741717ff4774521e6 SHA-1: 58a4d54a82d48960efe3314e75590a639b74f8a6 SHA-256: 956e6e9ddb2b5a1286310f3632f7ea6f94377720addd09652fb437790e9ec804
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search engine result, likely to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=how+long+does+it+take+to+recharge+a+water+softener
    • https://cdn.sqhk.co/putuziboki/hfjc8if/trending_videos_on_tiktok_online.pdf
    • http://natorg.fun/gironilubufefimuxurej4cfcx.pdf
    • https://cdn.sqhk.co/fumamimed/SZVhcie/plants_vs_zombies_xmas_download_windows_10.pdf
    • http://geparup.scienceontheweb.net/reading_comprehension_grade_1_worksheets.pdf
    • https://cdn.sqhk.co/jugomuzuteb/OqRsieZ/cb_insights_future_of_health_2018.pdf
    • https://cdn.sqhk.co/lepemafe/g8ciagc/ates_ve_su_3_oyunlar.pdf
    • https://cdn.sqhk.co/sevafeluba/jMXmhhQ/latest_action_hollywood_movies_2015.pdf
    • http://bridgecommerce.com/paleo_diet_grocery_list_for_beginners0pgag.pdf
    • http://liberum.sportsontheweb.net/77359923668.pdf
    • http://daating19.site/wevedovokedizebovaxewmfegk.pdf
    • https://cdn.sqhk.co/fumamimed/Vgg8Xd4/74453050373.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kovozenamofox/azhar_status_video.pdf
    • https://s3.amazonaws.com/bojafazes/news_template_free_after_effects.pdf
    • https://s3.amazonaws.com/jolituzoji/woborujegof.pdf
    • https://s3.amazonaws.com/vojapu/free_books_on_leadership_and_management.pdf
    • https://s3.amazonaws.com/nowonovege/spreadsheet_php_scope.pdf
    • https://s3.amazonaws.com/tometubufimopim/media_creation_tool_fr_windows_10.pdf
    • https://s3.amazonaws.com/dazovosugev/sikalastic_1k.pdf
    • https://s3.amazonaws.com/wezukep/ribonafabufupibo.pdf
    • https://s3.amazonaws.com/memobofilenabon/43008221451.pdf
    • https://s3.amazonaws.com/nevowimo/guided_reading_levels_3rd_grade.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffa8.bin
a8db492f7ac7076f302f94c505bd3617782ba0ee3aca3a9a5ba819168325f422
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA8 5188 bytes
font_01_sfnt_off00011156.bin
9dca067508d5277ea02ec88635e221a828fa6e5cec8eda88e1c6d1980901ed9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x11156 11428 bytes
font_02_sfnt_off00013797.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x13797 4324 bytes