Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b57715aa89ee2f…

MALICIOUS

PDF

212.7 KB Created: 2021-03-18 21:33:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 61853754f5360a12906062629971f8ce SHA-1: d6da956bb0112890aed404f9056324b93a3debc3 SHA-256: e6b57715aa89ee2f0330d3be5fd66bacecf7d958ede9e6c6f75f0bc71ee63274
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. While no scripts were directly extracted, the PDF structure and embedded URI heuristic point towards a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9854

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://fokemale.ru/award?keyword=chemical+properties+of+benzoic+acid+pdf PDF link annotation
    • http://fiziwafofekaku.mygamesonline.org/wojov.pdfIn PDF document text
    • http://help-copyrighteamservice.com/ukraine_gmp_guidelines2o56u.pdfIn PDF document text
    • http://sandiego-podcasts.com/why_school_uniforms_are_important_essayen83i.pdfIn PDF document text
    • http://fuxezaboxekave.scienceontheweb.net/american_gods_libro.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/what_determines_an_ecosystem.pdfIn PDF document text
    • http://simcars.ru/rutakajar45asa.pdfIn PDF document text
    • http://ziwigosopijulal.mygamesonline.org/what_is_the_best_convection_toaster_oven_on_the_market.pdfIn PDF document text
    • http://xefopuro.mypressonline.com/detufefavonotisogi.pdfIn PDF document text
    • http://mokaxizekebade.scienceontheweb.net/66423633745.pdfIn PDF document text
    • http://matawobedopikam.mywebcommunity.org/brush_calligraphy_for_beginners.pdfIn PDF document text
    • http://jerabigemoz.sportsontheweb.net/bodybuilding_program_for_mass_gaining.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fizup/subject_pronouns_spanish_worksheet_free.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/9521313650.pdfIn PDF document text
    • https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_0c62ab2aae8e45638a99334599afd34d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/the_walking_dead_graphic_novels_online.pdfIn PDF document text
    • https://7f993087-45f6-41f4-96e5-9dcaca18fb91.filesusr.com/ugd/9a92dd_07b435212bf641c9a0225bc5f50767c3.pdf?index=trueIn PDF document text
    • http://sabiwilurase.atwebpages.com/microsoft_senior_program_manager_interview_questions.pdfIn PDF document text
    • http://fowakoleviwamop.onlinewebshop.net/jean_anouilh_becket.pdfIn PDF document text
    • https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_83bf5d87ffd540e7a39aa791664770da.pdf?index=trueIn PDF document text
    • http://zujisofivo.onlinewebshop.net/how_to_pair_sennheiser_hdr_160.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/cultivate_what_matters_powersheets_2020.pdfIn PDF document text
    • https://ea74ff18-003d-4094-8454-8d7e15e33abb.filesusr.com/ugd/50de67_008201d84c33428ea2b5f412d6ebed05.pdf?index=trueIn PDF document text
    • http://sarutufasiko.atwebpages.com/mimowadokenuwogefojirap.pdfIn PDF document text
    • https://d1b33a7b-cde1-45d4-bc15-d4d3b6236ac5.filesusr.com/ugd/1d64af_2bad5ad3fa4b4a49963165a3ce4f82ff.pdf?index=trueIn 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_off00030416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30416 5488 bytes
SHA-256: 1f66560477e705f3b850c1ed70e9e4fc7cc816c52c900516cfc6b91bb55c5485
font_01_sfnt_off00031689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31689 15156 bytes
SHA-256: a9d1bb4e261e65a0709825a084b5f4fdbe854ecc7dba6f87f5f4572dffab04b0

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