Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f4b25b2d0e2e87e…

MALICIOUS

PDF

83.0 KB Created: 2021-03-05 03:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 80850ab737e6f835611f9e3a7c976d00 SHA-1: 18f66d85cd9051cf575fafdfc15238e174476b4f SHA-256: 2f4b25b2d0e2e87e63c4e94b2e6f27686cf71254fdc2294b674c58004d1a9947
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a malicious domain, likely intended to host a phishing page or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the PDF content suggest it's part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/wb?keyword=martin%20luther%20king%20jr%20i%20have%20a%20dream%20speech%20audio%20mp3 PDF link annotation
    • https://cdn.sqhk.co/mevazasid/gBiahjS/world_war_z_book_genre.pdfIn PDF document text
    • http://tufodudem.mypressonline.com/walomesedajiramabeniwewev.pdfIn PDF document text
    • http://sakivometo.medianewsonline.com/chapter_4_development_across_the_life_span_quizlet.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/simple_subject_and_simple_predicate_exercises.pdfIn PDF document text
    • https://cdn.sqhk.co/noneniwetav/gLthccX/horrible_ghost_sound_mp3_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gojogefe/XQtjaba/perfect_world_mobile_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/tasiteregixo/Yjb2ico/92945040118.pdfIn PDF document text
    • http://gajelifuluxapov.mywebcommunity.org/22993641070.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bomupi/rufeduwirepevonenunalud.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/feasibility_study_outline_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/secret_calculator_app_for_android.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/panasonic_kx-tgd220_handset.pdfIn PDF document text
    • http://palelezugob.onlinewebshop.net/spoken_english_learning_books_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/emirates_id_card_format.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/the_five_faces_of_oppression_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/7913059065.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/english_alphabet_colouring.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/bismillah_kijiye_song.pdfIn PDF document text
    • http://fabedidatifi.onlinewebshop.net/vampire_diaries_dialogue_season_1.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/57182947621.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/zosedajazowunezonip.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/giruzijerosewawogi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D4 5736 bytes
SHA-256: d914924536bd45df9f5f3975d079d3757ea17f08b2e991e8c194305aa44fbb31
font_01_sfnt_off00010c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C36 10468 bytes
SHA-256: 3fe444ad52e6e3bb97b4666a46980dc18ccc434fac98efbb0c9445d7a0352f78
font_02_sfnt_off00012ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FFB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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