Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a3555271fb71111…

MALICIOUS

PDF

65.3 KB Created: 2021-02-28 14:19:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 52ddd12fde48c7819077b0321be8ac7d SHA-1: e659b98ddf89f738dc3f772abccbf12feb906e3a SHA-256: 0a3555271fb71111769ffa0c1e46c6385a351a890fb4834755e06b8794d172a7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/award?keyword=how+to+use+klein+tools+et40 PDF link annotation
    • http://xuxetosufuzo.getenjoyment.net/how_to_repair_your_body_after_drinking.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/2QjaFwp/slingo_bingo_free_online_game.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/9550812407.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/hivhdtG/4_pics_quiz_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/kifateten/agdcJhc/parkour_the_office_season.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372735/normal_5fef0fdaf2b7e.pdfIn PDF document text
    • http://djami.ru/jazogizevefadizoz5xol3.pdfIn PDF document text
    • https://cdn.sqhk.co/libabafo/mKjgLer/fakudisatogefoguki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373239/normal_60342ed3ce470.pdfIn PDF document text
    • http://zimezobot.getenjoyment.net/smartboard_exchange_painting.pdfIn PDF document text
    • http://7lessons.space/22125860416qll6t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370744/normal_602de41e54312.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/jakujakula/honda_gc190_power_washer_oil_change.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/jack_skeleton_pumpkin_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/tamil_movies_wap_site_list.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/iec_first_year_workbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/de_gruyter_journal_style_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/knight_physics_for_scientists_and_engineers_3rd_edition_solutions.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_off0000c509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC509 4720 bytes
SHA-256: a38fbc3cc19ab6613ec92a335ced4b6725928c45e02b465155d8726807b7cc6d
font_01_sfnt_off0000d54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54C 10152 bytes
SHA-256: b3a884d418164beae351a2b46e7e295e0143d715d433f57a89f15e41d7051e1f