Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8d063795d6c67f…

MALICIOUS

PDF

58.7 KB Created: 2020-10-14 20:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: dda0568dbdcbcd2a4531ab131ff4a140 SHA-1: d47740f84cc0ac1d7ab791e5a2e6246f4be4267f SHA-256: 4b8d063795d6c67f87169544eec28a35e52d3ebd023695f6b41aa9469eb1fd88
184 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.
  • 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.
  • 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://ggtraff.ru/strik?keyword=f%2526p+guided+reading+level+chart In PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/revowo-mutitikiva-wiwegovinajo-tuxatusejuze.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4045700.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/rotizizalipi-xulejowo-wegevok-xutijub.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/xopevu_vilugarokobijos_fimorekon.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/rezareludufiven-voxodopi.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/bosilo_ginasesif.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/wowabaxisefidet-nikuvajekibesim-napoxalapa.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/dekefomivupe-kovak-talajonipa-fedebiraroz.pdfIn 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/769d3031-ca38-4387-851c-c8959b020214/jenikiboro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/547316c2-3275-4ce1-b08b-74caaca62896/65474760788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9987010c-f51b-4053-adfc-cd614e3412b9/40885481564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f767f190-d173-4c73-a736-2fcbd97f1ab5/7511572408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7790/1214/files/vavivakijeduluxatad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/cycle_of_galand_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7074/9856/files/abc_worksheet_cbt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/933e3e54-b2fa-4c28-b6b7-4dd602771fc5/mipam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86317527-8d8a-4ffd-9da9-b6657b348cbf/82115206885.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ab27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB27 4112 bytes
SHA-256: a255c4c16ad0aed5bed934bd7bb8c9397cbf279e2e368f789439f35522dca9b1
font_01_sfnt_off0000b92a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB92A 10992 bytes
SHA-256: 8ca5c7b36279735601de0ae2631908110790fcb677be49bd7cdcab825bd86fe2

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