Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ea6df09e0ad61c…

MALICIOUS

PDF

71.0 KB Created: 2021-03-09 03:53:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7dda38934e5739f1c38d73c25f96f70a SHA-1: 0384a85ce801d2e56d4ba0375ead3f365a4603f7 SHA-256: b9ea6df09e0ad61cea459c0a150008872c8fa6592c8c0dfac9038b182701eba0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/award?keyword=computational+complexity+christos+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403938/normal_5fca2e4b9e526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481418/normal_603950952937e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445573/normal_60160629babb3.pdfIn PDF document text
    • http://lngcliente.com/game_hay_cho_android_tiviwglt4.pdfIn PDF document text
    • http://nnorm-id.com/what_ingredients_do_i_need_to_make_bread_in_a_bread_machinemzmve.pdfIn PDF document text
    • http://doxisodezezaku.iblogger.org/67101853775.pdfIn PDF document text
    • http://agent-spv.space/94137048377u5zfw.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/ruzaganog/guide_for_temple_run_2_oyna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6404db30-4ed6-42eb-a6e3-f1fcdf6f027f/22431651547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd303b0b-a679-43fb-b3ab-ff2b2894a777/zefaxaxuwodekop.pdfIn PDF document text
    • https://e25b5f36-ee09-4010-8803-019b2853a23b.filesusr.com/ugd/c34eac_da1be1d425534f1c9a31371c920ae922.pdf?index=trueIn PDF document text
    • http://xevorerokune.epizy.com/bmw_car_images_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56500226-ce8d-47c9-9c95-c7b9d3247f09/hp_officejet_h470_bluetooth_pin_code.pdfIn PDF document text
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_ef7ce7c7ab3443dbb618fa47532bc5a7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/varoximu/logukupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5fb190d-1f43-4b88-9b08-d495057510f4/boss_micro_br-80_alternative.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/95898547435.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/14_gauge_stainless_steel_sheet_sizes.pdfIn PDF document text
    • http://wagaguzejaf.rf.gd/witupatemu.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/xunuvuzawabokukimopesede.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_off0000d770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD770 5468 bytes
SHA-256: e89d3cc7e89ed6e1cd35fedf70b10565f2f3cd1c750d9d4fe7d65a8ea74450ef
font_01_sfnt_off0000e9e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E4 10676 bytes
SHA-256: 3fb8ecf081536e66efbc8cd0ecc52985f2cc5ae8adb28844b6f25a7726ee1067

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