Malicious PDF — malware analysis report

Static analysis result for SHA-256 3236c6d19be625cd…

MALICIOUS

PDF

40.3 KB Created: 2020-10-05 20:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2d10a3fe8a48e5220ad981f4e1d0c2be SHA-1: da133e9d1293a4d16d4207910c7f3caf9b7b23dc SHA-256: 3236c6d19be625cd4c1dbe89b2893c5858ee6ecbea1af57f6c7d589b17440e55
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://gettraff.ru/strik?keyword=monk+character+sheet+5e+pdf In PDF document text
    • https://site-1036696.mozfiles.com/files/1036696/42347520719.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/34477178643.pdfIn PDF document text
    • https://site-1036918.mozfiles.com/files/1036918/zetilivipume.pdfIn PDF document text
    • https://site-1039443.mozfiles.com/files/1039443/wuzijidisanaw.pdfIn PDF document text
    • https://site-1039533.mozfiles.com/files/1039533/duzupino.pdfIn PDF document text
    • https://site-1040248.mozfiles.com/files/1040248/39363620431.pdfIn PDF document text
    • https://site-1038618.mozfiles.com/files/1038618/mapexovajegetaz.pdfIn PDF document text
    • http://files.railwayterraceselfcatering.com/uploads/1/3/1/4/131438692/383267.pdfIn PDF document text
    • http://dijeme.nutritionbythesea.com/uploads/1/3/1/1/131163653/7785809.pdfIn PDF document text
    • http://files.foxtapestrydesign.com/uploads/1/3/0/7/130739095/tojudevun.pdfIn PDF document text
    • http://files.childrenscoalitionac.org/uploads/1/3/1/3/131379343/0eb635be0c7.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/eb8a6e28-4f59-4041-8061-63dc8b47f7f7/95998980868.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49472dbd-349f-47c0-b8b0-730ae5242e3b/lezudetezi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88337117-48c6-49f2-b8de-03b1a4588600/63127123600.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_off00004ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF2 5404 bytes
SHA-256: b5328a17c9f6079132d075b3b26f31c448f48502b0b7031d1f0b8abec60ceee2
font_01_sfnt_off00006260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6260 15596 bytes
SHA-256: 048463d24f1fb4c821dc8030af4a892b1c7fd3d2319e95f8808b4eb19cdd1436

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