Malicious PDF — malware analysis report

Static analysis result for SHA-256 83b2e3f5baa0812e…

MALICIOUS

PDF

78.9 KB Created: 2021-03-04 19:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1baed471a44fe6cd26095a009a5fccbf SHA-1: 9e3239cf1a536d8346a7b2e64855eeca78931211 SHA-256: 83b2e3f5baa0812e5009e02c9ee2960a10b8df928ee5b46e05e1e1aac71c76cc
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM'. The primary malicious URL identified is https://maypoin.ru/wix?keyword=black+butler+season+3+episode+1+english. While no scripts were extracted, the presence of numerous links and the ML classifier's high confidence suggest an attempt to redirect users to potentially harmful content or engage in SEO manipulation for malicious purposes. The document body appears to be corrupted or heavily encoded, preventing analysis of its direct content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • 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.
  • 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=black+butler+season+3+episode+1+english
    • http://tanitebose.22web.org/11067080790.pdf
    • http://useporte.xyz/dynamic_broadcast_receiver_android_examplec7phi.pdf
    • http://excschool.ru/1144125537877gti.pdf
    • http://samoe-samaya.ru/battery_tender_1000a_jump_starter_manualw8103.pdf
    • http://worelimupuvefam.mywebcommunity.org/the_crown_season_1_cast.pdf
    • http://meriline.store/virtualbox_user_manualxncqe.pdf
    • http://yoganchik.space/1877977976488vdd.pdf
    • http://nesebonuvobeju.getenjoyment.net/does_humidifier_really_help_congestion.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/add7100b-b2c1-4b1a-bf26-d68cbcb25396/what_do_the_9_candles_on_a_menorah_represent.pdf
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_871231b7d14746b4904e7498c32a7c0e.pdf?index=true
    • http://bebovufuvuji.myartsonline.com/watch_doctor_sleep_directors_cut_online_free.pdf
    • https://uploads.strikinglycdn.com/files/6e949ca0-db19-4d6f-ac12-b881175679e9/zujebosawojofamavigub.pdf
    • http://zefifimagami.epizy.com/vefalepugetijezifatises.pdf
    • https://90ff81fc-98d9-4e53-96a3-aaa5c1c2042e.filesusr.com/ugd/bb5aff_10f493bfca7349008b003213e4209db6.pdf?index=true
    • http://fataragoreb.myartsonline.com/7139870351.pdf
    • https://uploads.strikinglycdn.com/files/42d8d77c-c11a-4b19-b8c3-22e519c3177d/dulivodazunejepud.pdf
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_a96bb56462e24143a96b45870dba5857.pdf?index=true
    • https://69cf8a46-0d3d-4b71-8fd1-93df925da18e.filesusr.com/ugd/e4064d_1238e715b3f84acaa48df855abfe96d2.pdf?index=true
    • https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_bc22ca2858114cf9bf28e5adf8ac4f32.pdf?index=true
    • http://donovebar.rf.gd/broken_angel_full_video_song_1080p.pdf
    • https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_716fab927a394e5ba122a1dda05985b4.pdf?index=true
    • https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_bfcf2e93a96b45b59a0520c769ef0fd3.pdf?index=true
    • https://c8019651-2137-4367-b38e-775fff3f8a75.filesusr.com/ugd/fc5a02_7a21bc87591a4ee28893191da4bb317e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/391dc8d8-7911-4cf0-ac42-0a9d4376dead/possessive_pronouns_worksheet_6th_grade.pdf
    • https://abaaaae4-9231-44fc-b12c-ad55ebcc68e7.filesusr.com/ugd/2ca09c_1e22f708c55f4c7aa815ced06802792d.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f77e.bin
b22195db10a6b074d30e5e7b70888a617589e627525c8e2496123e55107204f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF77E 5804 bytes
font_01_sfnt_off00010b38.bin
2866969221aa426f517207fb88dcfb32985a00624985a96cb6c94713da961a96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B38 10012 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.