Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d97abc8ddc03cd9…

MALICIOUS

PDF

83.8 KB Created: 2021-04-24 00:12:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 3c1eeabe2cbfd89f955ecfcd11cbf5c8 SHA-1: 0a4574614eb2c7e9502d6f338cd56f69ae637e91 SHA-256: 3d97abc8ddc03cd9ec2994d22503008ec37ad3f5ee7709504f56a6a47a07bbdc
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, appears to reference a 'Dir-615 setup as repeater', suggesting a lure to download a malicious file disguised as legitimate software. No scripts were extracted, but the presence of external URIs and the overall detection score indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/strik?utm_term=dir-615+setup+as+repeater PDF link annotation
    • http://healthyforczechrepublic.site/geometry_dash_worldlqbgg.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/ichdWie/love_island_the_game_season_2_picking_noah.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/Pgjgijd/temukinonelitokajebasu.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/E4iiRgh/speak_to_the_manager_karen_haircut.pdfIn PDF document text
    • http://techanomic.com/nibezujisitemb6o5h.pdfIn PDF document text
    • http://pumorux.medianewsonline.com/tablaturas_de_canciones_para_guitarra.pdfIn PDF document text
    • http://copyrightnotices-form.com/warcraft_2_cheats_goldaiozn.pdfIn PDF document text
    • http://domobifotuza.sportsontheweb.net/xaxidukolikuvixuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fararisujis.myartsonline.com/angles_in_polygons_questions_and_answers_tes.pdfIn PDF document text
    • http://rorazizaxaf.atwebpages.com/ftii_question_papers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e325ef9e-ac17-4fda-aa28-3cd3c9902f1c/nespresso_by_delonghi_lattissima_one_en500w_coffee_machine_-_white.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/103e9786-704e-4f53-b1e1-9a8490299760/root_asus_memo_pad_7_lte_att.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/59795795819.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/419774795.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/nizomipevazisipeg.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/landscape_photography_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/82304871639.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/gndu_date_sheet_ba_3rd_sem_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7e1f511-f4e5-4e14-8484-6622cc64f27c/musivawebozadure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7883b50d-6f6f-452c-b833-89e2d968ec64/my_cloud_home_setup_static_ip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f52c9648-ab57-4392-93e6-d5701ea30d9a/talk_to_me_in_korean_level_1_download_free.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E6 5144 bytes
SHA-256: a2ee95f2118ee2dbfe29c0ae297e27be070a7b3bac448896e2eff9135c1e46df
font_01_sfnt_off00010382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10382 12156 bytes
SHA-256: 56e19050f54c017d3438cb6325dae568b6f717474f314b0fecbed3d07c844673
font_02_sfnt_off00012c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C25 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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