Malicious PDF — malware analysis report

Static analysis result for SHA-256 79243012f0be47b2…

MALICIOUS

PDF

92.6 KB Created: 2021-04-06 17:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 605f7e6ac71af5a84ce47dfb1e9470bd SHA-1: 957e4064715e01dc252e58452a5d5377c0c64bff SHA-256: 79243012f0be47b22c1c88976e87eceb6048432348893b47e65f8ed5d69c4ad9
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://bologen.ru/strik?utm_term=washing+machine+service+near+me', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'washing machine service'. No scripts were extracted, but the PDF structure itself facilitated the embedding of the malicious URI.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://bologen.ru/strik?utm_term=washing+machine+service+near+me PDF link annotation
    • https://cdn.sqhk.co/sinupupuzaxa/wyhaD8c/zuru_x_shot_bullets_compatible_with_nerf.pdfIn PDF document text
    • https://cdn.sqhk.co/kimorotadopo/JAhds6U/fantasy_name_generator_star_wars_human.pdfIn PDF document text
    • https://cdn.sqhk.co/jaruxabal/NgcjhS9/indycar_standings_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/9gehbib/8592432621.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/K6zigDx/autoresponder_for_wa_auto_reply_bot.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/5pJihig/bumogiwesupigujatetigusex.pdfIn PDF document text
    • http://rigudozefogo.mypressonline.com/cabo_san_lucas_map.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/PjbFgcy/bang_bang_bang_song_2020.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/waste_decomposer_ncof.pdfIn PDF document text
    • http://xujadawowupu.scienceontheweb.net/tezaseduzolaxu.pdfIn PDF document text
    • http://jufanurozud.getenjoyment.net/famaliwametubi.pdfIn PDF document text
    • https://cdn.sqhk.co/nonodejudo/ZJMiE3V/23329670441.pdfIn PDF document text
    • https://cdn.sqhk.co/zofukumane/khdij4P/petunifuvipofa.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/keNjcgg/79150738034.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/05500aad-dfb9-4848-b57d-afe738723271/honda_cr_v_maintenance_codes_b134.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bfe93b5-4aab-4c84-8300-51f6628274b0/resumen_del_libro_etica_para_amador_capitulo_4_5_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fed1f33-5c6c-472a-839f-500e53d007e0/tom_clancys_ghost_recon_breakpoint_pc_system_requirements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bac9a51-ade5-4159-a142-dc184b6391c8/delonghi_portable_air_conditioner_with_heat_pump_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/747712d9-9a1e-4c9d-a602-ddb156408fa1/google_cardboard_qr_code_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b35aae88-fbfc-4e79-a445-e0df58c73dcf/92870193256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ae231e7-7535-42fa-b4c1-34c47a771d6a/what_is_my_rca_tv_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30f8e319-58d0-4c19-baac-f5ac26206469/73835130648.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea868355-0d13-46bd-91fb-e2d23e5cec8f/focusrite_scarlett_6i6_driver_windows_7.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_off00012d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D77 5256 bytes
SHA-256: 74cccf761ebb8720a4516efd7359660f0ecd7797e895ae0838c487bedc687b6c
font_01_sfnt_off00013f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F43 11120 bytes
SHA-256: 6ec0affe92fb3335a6bf06347941cc75d5512170e8ff29c489424f4166290934

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