Malicious PDF — malware analysis report

Static analysis result for SHA-256 50cd0f51846b633f…

MALICIOUS

PDF

80.9 KB Created: 2021-03-08 18:15:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 13d076da1d22afdc368fa13a2a1bb870 SHA-1: 3d2c168577b37c5216268c53c03ed6a1a87bfacd SHA-256: 50cd0f51846b633fe6e1ca6df61a23c211350644f5e6eef1f7b9723e540cda95
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, 'https://leonvi.ru/award?keyword=comment+installer+une+cam%25C3%25A9ra+de+surveillance+pdf', is the primary indicator of compromise, likely leading to a phishing or malware download site. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://leonvi.ru/award?keyword=comment+installer+une+cam%25C3%25A9ra+de+surveillance+pdf PDF link annotation
    • https://cdn.sqhk.co/tipefimex/UF7sbSi/68416561267.pdfIn PDF document text
    • https://cdn.sqhk.co/natokaze/nxhg4gj/shark_egg_fishing_simulator_roblox.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/5hely2m/ihealth_myvitals_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/vofonowul/fggcTjf/raspberry_jam_canning_recipe_with_pectin.pdfIn PDF document text
    • https://cdn.sqhk.co/pevizopubok/Kiagh30/melody_music_school.pdfIn PDF document text
    • https://cdn.sqhk.co/vikojovowoso/gfG0fgp/liver_hepatoma_icd_10.pdfIn PDF document text
    • https://cdn.sqhk.co/gagupibi/frgfiiP/golden_boot_race_2019_epl.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/hiSXRS0/amazon_fire_tv_4k_remote_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/wanuvudeb/emhihjg/unclaimed_property_texas_statutes_title_6.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/Zldihhd/32330066297.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9f4c6bb-62f3-4ceb-b674-234f1859a28c/4832370587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcd063d4-cde0-447a-9a81-f85eeb0cfa2f/59865267492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee1e41e3-195d-4900-8432-269c538854f5/99865024320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c21386a-699c-44ab-8e40-5eb5ad97f048/beautiful_creatures_book_synopsis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c95f8a5e-6f11-4e3d-bde6-c09554f14503/how_to_show_data_points_in_excel_graph.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/578a1061-28a8-4376-a16a-4c3473aba45f/mesotugedexivivaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55218559-3214-470e-a811-07ab038c1d42/nuvosedinopapatajuxujusom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a47af2b-297c-4347-aa8e-85447fe0ef6c/28260632335.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f59f2586-e65a-43cf-8c24-78088429e3ba/derechos_humanos_definicion_naciones_unidas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f6e1dc4-f28f-40e3-a9d1-f57249778e45/tipos_de_grupo_sanguineo_y_factor_rh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86f0fa24-4942-4929-b14f-8092236370d1/how_to_install_swann_camera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b60f939-2fcb-4011-a708-c2ec5bb38eb7/60544446905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94ea0ec9-70c5-4234-9689-f99c9a653e28/11400694020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62a62472-590e-4071-b04d-1e11b14ac967/4th_grade_math_jeopardy_review_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6df63a3-a284-4dc4-b567-0725f898d6df/family_feud_game_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55194f47-5951-4b27-8f7e-5f3f1adcf2bc/35576817741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82932525-b894-44f9-9bc7-40bcedf0007c/39756261442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f13498a-f531-4f2d-a4cf-168c55d859a0/what_does_dragonfly_mean_in_native_american.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad5ba94-118f-47f5-9a3c-a8879d23af19/wdtv_live_hd_media_player_firmware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36dedc07-3792-4480-b77a-3116872a8752/marlin_336_rifle_sling.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_off0000fb45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB45 5408 bytes
SHA-256: c8656ffde811c4be1d2ccaeb96272f73a363df7119442160aae89cd790909563
font_01_sfnt_off00010d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D51 11932 bytes
SHA-256: 7cb6ff82f87979cda82095b3be7a4736926d8bf0d1dfd7264d1c1fd1fa0559ab