Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e7fc7c0d3a16cd…

MALICIOUS

PDF

48.4 KB Created: 2020-10-10 12:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 499e55bc2c910cc06d9b8a64c95b3992 SHA-1: f2e57a957e8e0fabdb4b1f3cdae5f84ae5abddd2 SHA-256: 00e7fc7c0d3a16cd892fb58afe6da3f1bd0a24305737ec1005069908b92a01d3
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://cctraff.ru/strik?keyword=fluid+mechanics+interview+questions+and+answers+pdf In PDF document text
    • https://site-1043650.mozfiles.com/files/1043650/88142912851.pdfIn PDF document text
    • https://site-1040558.mozfiles.com/files/1040558/41867436887.pdfIn PDF document text
    • http://miwuf.virtualqe.com/uploads/1/3/0/7/130740146/gojekujug-xorez.pdfIn PDF document text
    • http://sakib.geekdigpod.com/uploads/1/3/1/6/131606490/8008963.pdfIn PDF document text
    • https://site-1037044.mozfiles.com/files/1037044/40608990646.pdfIn PDF document text
    • https://site-1036907.mozfiles.com/files/1036907/wajowuj.pdfIn PDF document text
    • https://site-1036691.mozfiles.com/files/1036691/vuwaterukivole.pdfIn PDF document text
    • https://site-1036883.mozfiles.com/files/1036883/65457733359.pdfIn PDF document text
    • https://site-1041922.mozfiles.com/files/1041922/34987366625.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/7efb80ea-cc87-42b9-af49-08e2dbea7331/40927489926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd065dc-0344-4149-916e-9b9bf0f0453a/61380997460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f8d317a-e000-405b-838d-1ff54c8dada8/41059701122.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20b70f26-371b-469c-bdae-da3c7285712c/69546208732.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_off00007e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E49 5628 bytes
SHA-256: 4d080f37c1184d45cdcc06801b7b706c041d78e7a8ebce3397f2d8240b8c069d
font_01_sfnt_off0000914c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x914C 10292 bytes
SHA-256: dcbef79c3b70d51de558da413a9fe92ae76de5341d2b92c28085a6f4b92ea098

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