Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ee59831c1fca92b…

MALICIOUS

PDF

69.6 KB Created: 2021-02-15 07:47:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9028f90c84103240b6ec606f219ebd43 SHA-1: c1a71722d1fb699e42e9869d54ece3ba0244e72e SHA-256: 1ee59831c1fca92b3a228e5ba397bf24caade7971fdc74246b876c321d537d9a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/aws?utm_term=mathematics+grade+7+study+guide+pdf PDF link annotation
    • https://kunugamonigosa.weebly.com/uploads/1/3/1/8/131871761/16f61adfb5.pdfIn PDF document text
    • https://vafoguvisijun.weebly.com/uploads/1/3/4/8/134887412/8414300.pdfIn PDF document text
    • https://cdn.sqhk.co/gagowuname/2jcjgge/pc_world_online_chat.pdfIn PDF document text
    • https://lumigoxodavi.weebly.com/uploads/1/3/1/6/131606620/a0cd43b1b9.pdfIn PDF document text
    • https://voxivunesiru.weebly.com/uploads/1/3/1/4/131407918/refol.pdfIn PDF document text
    • https://cdn.sqhk.co/gusiloxi/bggjegW/streams_live_in_five_ao3.pdfIn PDF document text
    • https://cdn.sqhk.co/vedukosamo/ghxDjea/86359848930.pdfIn PDF document text
    • http://mugedly.xyz/85634578929l79tp.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubokave/jgfbDe1/lomunuvikutobugen.pdfIn PDF document text
    • https://cdn.sqhk.co/tedisebufen/7jhKTCB/photo_gallery_album.pdfIn PDF document text
    • https://cdn.sqhk.co/pusuvizodez/Ckhjgjl/snake_simulator_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/rukugewul/hjddeij/17903052160.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/vinivuxo/classified_balance_sheet_financial_accounting.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/canva_templates_login.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/2906358571.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_off0000d03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03E 5724 bytes
SHA-256: 9d938c1a9593b458d89172bf27fce2d50e0f5a8db71ca660903e38650953e28d
font_01_sfnt_off0000e3af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AF 10608 bytes
SHA-256: 5965f52f5bea7dc9a8b821ee149455fd28fd93c344980c95eabe619f32dfe43e