Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb1968b60fcaedc8…

MALICIOUS

PDF

87.5 KB Created: 2021-06-01 18:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1159abf716bf77b5d8a8d7bb1501e8ee SHA-1: ba71c47a34eb473c7ecbbf3e322d768f38d9b9a3 SHA-256: eb1968b60fcaedc8933380582d091d605a57293a9a7d2cbd5e1fae7b7a2d9b5f
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

This PDF document was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection, indicating malicious intent. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic suggests the document instructs users to copy and paste content into a shell, a common technique for executing malicious commands. The embedded URL 'https://jottigo.ru/123?utm_term=run+avd+manager+without+android+studio+windows' is likely part of this execution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/123?utm_term=run+avd+manager+without+android+studio+windows PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472200/normal_6002426b5e88c.pdfIn PDF document text
    • https://gatevipamor.weebly.com/uploads/1/3/4/8/134878843/867569.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473031/normal_5ff6667c6f4cd.pdfIn PDF document text
    • https://wemavejuza.weebly.com/uploads/1/3/4/6/134689468/9ebf33f55e3278.pdfIn PDF document text
    • https://ditezuni.weebly.com/uploads/1/3/5/3/135350757/ee2f1eb6212d5.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
    • http://xedidovetaw.pbworks.com/f/how_do_i_factory_reset_my_epson_printer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/802b95b1-76e8-4a01-88c6-c14818dcd731/vobopugipunalef.pdfIn PDF document text
    • http://niwomif.pbworks.com/f/48693249041.pdfIn PDF document text
    • http://banusiv.pbworks.com/w/file/fetch/144443013/andy_app_player_64_bit_download.pdfIn PDF document text
    • http://wijozuzapusa.pbworks.com/f/xujigifitizesedepexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1adea85a-726e-4ba1-8e7c-68118f20f0a4/95021339009.pdfIn PDF document text
    • http://pupowivala.pbworks.com/f/how_to_make_homopolar_motor_car.pdfIn PDF document text
    • http://sepaxebi.pbworks.com/w/file/fetch/144413751/where_is_sadie_adler_rdr2_online.pdfIn PDF document text
    • http://botinuba.pbworks.com/w/file/fetch/144414594/tijenadekufekijiv.pdfIn PDF document text
    • http://ravowibosu.pbworks.com/f/how_fast_is_the_porsche_panamera_gts.pdfIn PDF document text
    • http://siwuromo.pbworks.com/f/how_many_calories_are_in_a_burger_king_chicken_sandwich.pdfIn PDF document text
    • http://letonepamusi.pbworks.com/w/file/fetch/144440685/podewosesasevuwep.pdfIn PDF document text
    • http://mizunebapod.pbworks.com/w/file/fetch/144455286/56401069540.pdfIn PDF document text
    • http://kokoxudalux.pbworks.com/f/bollywood_actress_without_makeup_photos_images.pdfIn PDF document text
    • http://siruzosu.pbworks.com/f/sopa_de_letras_para_imprimir_animales.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_off000105fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FE 5248 bytes
SHA-256: 162b697e91e45c04e470cef1704ac5e1b29b8774a56f39df66613d6d548ae491
font_01_sfnt_off000117bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117BC 12460 bytes
SHA-256: ea9f0de8fc3c22fe60983dd537baffeb04d13a8d8157159294879f79b5b5046a
font_02_sfnt_off00014279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14279 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333