Malicious PDF — malware analysis report

Static analysis result for SHA-256 043f396ef4cf33a5…

MALICIOUS

PDF

45.5 KB Created: 2020-10-08 21:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f57de49e2a3d79593d5c4f28be2a5f92 SHA-1: 6e593c85d80fb3a014312bf0dbffd41b9037f3fb SHA-256: 043f396ef4cf33a5a2886cc3dba73017fcc371cbbcfeb940c81ac887a060f6d3
132 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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=home+choice+catalogue+august+2020+pdf In PDF document text
    • https://site-1037152.mozfiles.com/files/1037152/rasisume.pdfIn PDF document text
    • https://site-1043520.mozfiles.com/files/1043520/vipidit.pdfIn PDF document text
    • https://site-1043495.mozfiles.com/files/1043495/68878988667.pdfIn PDF document text
    • https://site-1043704.mozfiles.com/files/1043704/22219021745.pdfIn PDF document text
    • http://zerepot.transformationconference.co.uk/uploads/1/3/1/4/131406717/917512.pdfIn PDF document text
    • http://xikuz.darkside1.com/uploads/1/3/1/6/131636648/289548.pdfIn PDF document text
    • https://site-1040050.mozfiles.com/files/1040050/japal.pdfIn PDF document text
    • https://site-1037184.mozfiles.com/files/1037184/30595898435.pdfIn PDF document text
    • https://site-1039465.mozfiles.com/files/1039465/sijolojomubuwame.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/aef81f1c-a384-465b-b342-9e73d03a112f/84783757172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fa2198b-a89d-46d5-b2ca-24fcfaa5b26f/688320681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63d73766-be64-476c-9d6d-915750e28eaf/90538701544.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86e35f44-1524-4a7a-8f47-1668a58022dc/35939751744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84ff1cb3-aa37-4b89-ab4e-51c8514cddce/baboj.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CE 6744 bytes
SHA-256: ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425
font_01_sfnt_off000072b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B6 5708 bytes
SHA-256: 72ff91ee65865aef39941ec02671c30058b0957b4661454aa25273a6c07570be
font_02_sfnt_off000085ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FF 10132 bytes
SHA-256: a4d8e855a3e3b99131e5436b858f69537a830424c12b72e83d8d0f9a9dde529c

Open this report in the interactive analyzer, or submit your own file for analysis.