Malicious PDF — malware analysis report

Static analysis result for SHA-256 15f4c488e423ce48…

MALICIOUS

PDF

39.7 KB Created: 2020-10-03 08:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 037c55decfdf44a3935b4bb4267c9e14 SHA-1: a442ecbf62e286a158531ed846a90fd931cd8915 SHA-256: 15f4c488e423ce483fa7720a1dc4b701e715975a3a6b1ded51ec57b926c2ac96
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/pify?keyword=the+federal+in+federalism+worksheet In PDF document text
    • http://files.woolandthings.com/uploads/1/3/0/7/130775647/064540ffe6e.pdfIn PDF document text
    • http://fovog.charlotteandcompany.net/uploads/1/3/1/4/131483378/letekilor.pdfIn PDF document text
    • http://mupetogas.deftspacelab.com/uploads/1/3/1/1/131164573/d20318.pdfIn PDF document text
    • http://gufifi.dyercareers.com/uploads/1/3/2/3/132302912/rirupiseba.pdfIn PDF document text
    • http://files.mtlionmtb.com/uploads/1/3/2/6/132681391/munis_nebukit.pdfIn PDF document text
    • https://site-1039443.mozfiles.com/files/1039443/73941271754.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/7215799993.pdfIn PDF document text
    • https://site-1037192.mozfiles.com/files/1037192/44430757161.pdfIn PDF document text
    • https://site-1039814.mozfiles.com/files/1039814/feturutakevonidozobit.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/215950ff-741b-4164-8bf8-56945122e138/bawupokotoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4569e16d-03cc-4518-ab24-d329ab360798/87344172319.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/199c6850-ddf1-4a92-8b1d-84839273a942/83189407444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58cc982b-bea7-483d-8c3a-e73e6f0ba636/wikavodeteripagute.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_off00005e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E53 5252 bytes
SHA-256: 308361b5abb29992f81c33299e6d86f78ab6cf5bd5bb8a24eb772a5a76cca1fd
font_01_sfnt_off00007011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7011 10020 bytes
SHA-256: 2ec54120130b8217eb4faf4aedfda33a586b3131bb23697292dcd9224e43fdad

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