Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8aee6a14a13854…

MALICIOUS

PDF

49.7 KB Created: 2020-10-10 15:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 631f181cd6da27a75208d9e066dc55ec SHA-1: fbfcfe6ff81cb6ddd419b1b1e91853d22d5b449d SHA-256: 5d8aee6a14a13854a44237c8ae22bf3c01f027b4654a77dad9da6c9e05a3f7be
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://cctraff.ru/strik?keyword=nuvvostanante+nenoddantana+mp3+songs+free+download In PDF document text
    • http://vedeber.heritagemaplefarm.com/uploads/1/3/2/6/132680813/9171890.pdfIn PDF document text
    • http://files.castleisland2go.com/uploads/1/3/0/7/130739122/masuzizob.pdfIn PDF document text
    • http://kotan.lymeregisu3a.org/uploads/1/3/1/8/131856080/wokafomukixidum_bibirenusar.pdfIn PDF document text
    • http:///\/manchipatalu.blogspot.in\/2007\/12\/niluvadhamu-ninu-epudaina-nuvu-In PDF document text
    • http:///\/mohansongslyrics.blogspot.in\/2011\/05\/somthing-somethingnuvvostanante.html,video_url:,zoomit:0,premium_content:0,rest_lev:0,rest_msg_free:null,rest_msg_paid:null,_e:0,aes_enabled:1,aet:1,release_date:JanIn PDF document text
    • http:///\/teluguhitsonglyrics.blogspot.in\/2014\/07\/adire-adire-song-with-lyrics.html,video_url:,zoomit:0,premium_content:0,rest_lev:0,rest_msg_free:null,rest_msg_paid:null,_e:0,aes_enabled:1,aet:1,release_date:JanIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c810a94e-4633-4130-95e8-4caba9267969/nezidamotisoviwopovej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/546b746a-4e0b-469d-a4de-9204cae25f9a/sodolifuta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e8c38a5-59ed-445b-9e48-9f5c6ac35f9f/vanurukupugujad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09e93a0c-e7b2-4f03-addd-6094caaeb73b/52197591803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4844/9686/files/renivareri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5966/0968/files/community_service_worksheet_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/ethanol_dry_ice_bath.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4914/8828/files/distributed_and_cloud_computing_kai_hwang_ebook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5849/1303/files/xamusubizusokolixabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/39666649300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3839/9902/files/18287651103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5519/7607/files/61505925645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2754/1409/files/fibrous_root_system_definition.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_off00007f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1B 5648 bytes
SHA-256: f95bdda03f1f0a0f4251f6d26bdd0549018b1d7c4d0ebc4a363e7f03f2a59225
font_01_sfnt_off0000925b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x925B 11768 bytes
SHA-256: 4e502ca72961cde0268104375b8f20c7e843281f070347f6ec23d1f6286036be

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