Malicious PDF — malware analysis report

Static analysis result for SHA-256 046ef88815993c0a…

MALICIOUS

PDF

72.8 KB Created: 2021-03-05 10:25:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3d3967ed95d5f384e997a442173907d5 SHA-1: 7889065912111027aaebc085fd506590f7a290d9 SHA-256: 046ef88815993c0ab0e8047e8440e7b0d72caf838e916a142485412a4d61174a
196 Risk Score

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xajibur.ru/wix?keyword=team+guy+military PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445570/normal_603255ec86312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409819/normal_5fd2dc9f2fd5c.pdfIn PDF document text
    • http://zezomaxijuduj.22web.org/best_powerpoint_slide_templates.pdfIn PDF document text
    • http://memisada.mygamesonline.org/zikalijovemogofetedew.pdfIn PDF document text
    • http://rowexusaje.mypressonline.com/pilgrim_at_tinker_creek_short_summary.pdfIn PDF document text
    • http://fesaniru.iblogger.org/wisuwugobodosa.pdfIn PDF document text
    • http://goginexoze.22web.org/sas_import_excel_sheet_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468831/normal_5fe209631e20e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454679/normal_60050b0371fad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_9ef6200ebce6401991cb54aa59df46e8.pdf?index=trueIn PDF document text
    • http://pevipitoz.atwebpages.com/2006_honda_civic_service_timing_belt.pdfIn PDF document text
    • https://ec679cc6-872a-45a8-b2fd-b1bc8f6ddb77.filesusr.com/ugd/d1d005_2f29b1924ae9487a819eeac0668f0bbe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lusabifef/poromiwogaxubavikudeje.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/peak_performance_vinterjacka_vit.pdfIn PDF document text
    • https://901c4554-6fda-40bf-8344-1f1538f5dc06.filesusr.com/ugd/a76634_9e5ffa34e9104e05a0dbaf8501ad863d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/fiji_ministry_of_health_annual_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/eternal_city_story_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/download_sketchup_2019_portugues_crackeado.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/jimitamotogezoruzezozis.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/chinese_language_lessons.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_off0000e234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE234 4880 bytes
SHA-256: 7fd681ce9e617ddac4c83e1d63d04b7087a53ff833ed8d93edb3deef9bc429bb
font_01_sfnt_off0000f2be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BE 10372 bytes
SHA-256: 8aae73ba849939d1c7bf79b189ec799e250a82ccc1b1514ac3a9326610f46bf3