Malicious PDF — malware analysis report

Static analysis result for SHA-256 4368cd380e135e40…

MALICIOUS

PDF

458.8 KB Created: 2021-03-18 13:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 1a6547cdea02f391fe538a94a71fc782 SHA-1: 9b04c6ad697ed9477e6b6dec34e1608e8654540b SHA-256: 4368cd380e135e4046d310fd37f3866ffe3ca16ea69cd6c09b99d51058de8cb5
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 'nipisod.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, contains text related to 'Telekom malaysia berhad annual report', suggesting a lure to impersonate a legitimate organization. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8070

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://nipisod.ru/123?utm_term=telekom+malaysia+berhad+annual+report PDF link annotation
    • http://taxokisekajetek.22web.org/46639052599.pdfIn PDF document text
    • http://dirozigumifew.scienceontheweb.net/calendario_noviembre_2020_para_imprimir.pdfIn PDF document text
    • http://f13x.xyz/atonement_dress_patternozsy4.pdfIn PDF document text
    • http://prognoz-football.club/the_ruins_of_gorlanoc8p4.pdfIn PDF document text
    • http://meinekarten.best/non_allotropic_forms_of_carbonh9ij3.pdfIn PDF document text
    • http://lubegow.iblogger.org/72373393174.pdfIn PDF document text
    • http://defi-bet.world/vermont_castings_parlor_furnace_defiant_1975xyael.pdfIn PDF document text
    • http://fejukoturig.medianewsonline.com/amoxicilina_500_mg_bula.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/644f6df9-436e-43ce-af47-c77123f06b9b/office_space_hypnosis_scene.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/wondershare_editor_pro_for_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7870b1d3-37ee-42da-bb1e-fbb1a22a9421/buzz_lightyear_remote_control_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/anime_movies_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/mipikevebi.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/nyla_blackbear_sheet_music.pdfIn PDF document text
    • http://doxokalisawe.myartsonline.com/wordly_wise_3000_book_5_lesson_11.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/fevekazatizoba.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/petta_audio_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/black_wallpaper_hd_4k.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1475e42-5f76-4c58-a888-c2967398c524/45500247784.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d28635d2-151b-4641-9b6e-450aeb9261d0/88392650460.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/lipiz.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/call_aundi_hd_video_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ad290de-fcb7-4677-b369-d734db41be27/how_to_disassemble_dyson_dc59_battery.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_off0006ddf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDF1 5452 bytes
SHA-256: 0fe2df18b0c139b04d105e8056b5f82e280951eb3fe2b8c110160e6478408d74
font_01_sfnt_off0006f057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F057 12320 bytes
SHA-256: c7d88f3d6ab5db6e0ab47625a1cc032f50fd410518ed6ea4cffbcb1fc14dbe0c

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