Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d1a8d6e8fe6a95…

MALICIOUS

PDF

49.5 KB Created: 2020-10-08 02:08:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: bcb02d324bc006a22d1f867964f3d6e9 SHA-1: 99646e63f74b96cfbdd6b1f386112cb04ea4ba58 SHA-256: 80d1a8d6e8fe6a959d96c36220695989e51e3a13d0183408f34634b55842216e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=toshiba+satellite+backdoor+bios+password In PDF document text
    • http://duzena.cuasp.org/uploads/1/3/1/6/131606490/6810122.pdfIn PDF document text
    • http://files.fitness-slayers.com/uploads/1/3/0/8/130814279/megovol.pdfIn PDF document text
    • http://vazafofu.artillerousa.com/uploads/1/3/1/4/131437130/1927509.pdfIn PDF document text
    • http://tuzedo.cutcopyandpaste.co.uk/uploads/1/3/2/3/132303001/sovegunuv_wigotik_bowudiwetuko_niruloj.pdfIn PDF document text
    • http://jopadaso.devotamath.com/uploads/1/3/2/7/132712358/sojixoto-wiseko.pdfIn PDF document text
    • https://site-1036880.mozfiles.com/files/1036880/sebegafepotasovexutasikax.pdfIn PDF document text
    • https://site-1038575.mozfiles.com/files/1038575/68021204685.pdfIn PDF document text
    • https://site-1036742.mozfiles.com/files/1036742/76654205138.pdfIn PDF document text
    • https://site-1036935.mozfiles.com/files/1036935/28959338607.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
    • https://uploads.strikinglycdn.com/files/1053e5a8-2ebf-48da-ba40-6abe748ad52f/82699094079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72e5e1e9-b924-4652-a7c0-417e57bb2aa7/21010839336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffbde849-c7c6-4614-99ae-b5ca0abd2afe/74135677926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7698/6034/files/vuvadarasuvepexejokosape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2920/6952/files/minecraft_xbox_paper_recipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2498/5497/files/52669903910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/light_sources_minecraft.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_off00006754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6754 5088 bytes
SHA-256: f26da51ae9e499c6cbfe3b34761bb0eb9943465c5fd78744a7137aaea914957a
font_01_sfnt_off000078bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78BC 15312 bytes
SHA-256: 4fcf469528c53a3e516fae1e1ee40af05f12810422df858fc0c2d0a24940f10f
font_02_sfnt_off0000a872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA872 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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