Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b7175e46453a5c…

MALICIOUS

PDF

41.3 KB Created: 2020-10-10 16:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: dd8b40df2532973336c77403c66b50b7 SHA-1: fa0ab6edf3af4250e373ee0046e8406b6851552e SHA-256: 46b7175e46453a5c760af877f6ad56b396a8bf64e9267cda9904839093f92982
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://ttraff.link/pify?keyword=number+chart+1-50+with+pictures In PDF document text
    • http://files.missouriattorney.com/uploads/1/3/2/6/132696030/lositusomozosog.pdfIn PDF document text
    • http://files.salsberyonlinegarden.com/uploads/1/3/1/8/131871642/kibewipelifilez_zavupurub.pdfIn PDF document text
    • http://files.ateliermandaline.com/uploads/1/3/0/9/130969631/sunawako.pdfIn PDF document text
    • http://juzivoriz.sdsusvo.org/uploads/1/3/1/1/131163559/7e200b3d.pdfIn PDF document text
    • http://kenawe.favinyl2019.com/uploads/1/3/1/4/131437421/nemafavunofigiv-pobasa.pdfIn PDF document text
    • http://konofiri.edwinfox.com/uploads/1/3/1/3/131380594/rupaxowove_kituwikofolovol.pdfIn PDF document text
    • http://jovati.wildonwildlife.org/uploads/1/3/0/8/130874498/bamexupulaje.pdfIn PDF document text
    • https://site-1036734.mozfiles.com/files/1036734/51713775918.pdfIn PDF document text
    • https://site-1036925.mozfiles.com/files/1036925/74035234303.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4132/4184/files/97521396174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9383/files/ramodopesomulak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5993/6421/files/banavulovurulol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5538 5360 bytes
SHA-256: eb7eff5ec0e7056519f7b92bda602d2123b8854c93e6db1a36a9530c06cc6a1b
font_01_sfnt_off00006795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6795 10136 bytes
SHA-256: 06e8f689e0a2b4e5e9bc4e43fa1deda71b651ce2fc3e8144cc6dd9c6a4f18f71
font_02_sfnt_off00008a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3