Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e91a7f6976448b…

MALICIOUS

PDF

37.9 KB Created: 2020-10-09 01:44:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ffb8dc04578cdcce96116eadc5de31a7 SHA-1: c654ae47fcae0358056d7b7e6412e77cb632fc02 SHA-256: 46e91a7f6976448b8ca033f3afe2fbd3bac2e379e0b1b47ff285fc604849b337
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://gettraff.ru/strik?keyword=dante+s+inferno+graphic+novel In PDF document text
    • http://files.swiftcreekguitars.com/uploads/1/3/1/3/131380745/duvulaviget.pdfIn PDF document text
    • http://files.isbhu.com/uploads/1/3/1/6/131606839/duxuradaworumoxaja.pdfIn PDF document text
    • http://gomub.sustainablesonomacounty.org/uploads/1/3/0/7/130776445/pijevisimiv.pdfIn PDF document text
    • https://site-1041695.mozfiles.com/files/1041695/benaran.pdfIn PDF document text
    • https://site-1041934.mozfiles.com/files/1041934/80976226538.pdfIn PDF document text
    • https://site-1042922.mozfiles.com/files/1042922/vogovebasarafoxon.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/69492481584.pdfIn PDF document text
    • https://site-1036832.mozfiles.com/files/1036832/23093636794.pdfIn PDF document text
    • https://site-1039391.mozfiles.com/files/1039391/xegozipimanab.pdfIn PDF document text
    • https://site-1038882.mozfiles.com/files/1038882/poxojaxeponilon.pdfIn PDF document text
    • https://site-1036659.mozfiles.com/files/1036659/zudixamewuvimigomerejoj.pdfIn PDF document text
    • https://site-1038779.mozfiles.com/files/1038779/38095852573.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000056ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56AD 5336 bytes
SHA-256: ca753d0168438314c33f706a9363f268ad79a6e8b94e553db8221737f7b58e43
font_01_sfnt_off000068e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E4 9996 bytes
SHA-256: 9889ea90d2f9aa8aa823713aa9de9122f0c96856363f625fb34e9ecf78e9050b