Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d292952ea2db505…

MALICIOUS

PDF

41.9 KB Created: 2020-10-10 05:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 30e009bc48ec46454a966176dcb04848 SHA-1: 7cb9ba2613bfe6126c0691097a082af704118441 SHA-256: 4d292952ea2db5059a0f12ff4a2e04220fcb8af2c9a401a4be6b1aad39357f47
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=bank+of+america+personal+financial+statement+pdf In PDF document text
    • http://files.scsaast.org/uploads/1/3/0/7/130740180/cf2dce.pdfIn PDF document text
    • http://files.wholeheal-pl.co.uk/uploads/1/3/1/3/131380126/zizuwo_xopokijimis_kiloxilegot_tabibezasolul.pdfIn PDF document text
    • http://files.oipc.info/uploads/1/3/0/9/130969054/6060322.pdfIn PDF document text
    • https://site-1036656.mozfiles.com/files/1036656/57977845061.pdfIn PDF document text
    • https://site-1036725.mozfiles.com/files/1036725/44151165631.pdfIn PDF document text
    • https://site-1037844.mozfiles.com/files/1037844/2966046288.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/97550000735.pdfIn PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/43264924901.pdfIn PDF document text
    • https://site-1036886.mozfiles.com/files/1036886/dibojetu.pdfIn PDF document text
    • https://site-1036885.mozfiles.com/files/1036885/13715142299.pdfIn PDF document text
    • https://site-1037163.mozfiles.com/files/1037163/61920150569.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_off00006538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6538 5416 bytes
SHA-256: 7aa7ef75ba6638df093372746577d20b045db304eeb4808051beeef64c3ca0a9
font_01_sfnt_off00007794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7794 10200 bytes
SHA-256: 5bf282d5b886ba62129a1271e34e3f53fb8e09830f64c831bf19c37539331be1