Malicious PDF — malware analysis report

Static analysis result for SHA-256 3763f54f10018493…

MALICIOUS

PDF

51.3 KB Created: 2020-10-30 06:56:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 503b71b747617880f6cc183e12af11c6 SHA-1: 18a144c63e835339e5bcb315272b0de2f8353977 SHA-256: 3763f54f10018493d360a0d038be43f84cc1e49c1151d99dea0e0167611c8d67
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to known malicious infrastructure, disguised as a movie streaming service. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded link suggest an attempt to redirect the user to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/123?keyword=watch+jumanji+online
    • https://cdn-cms.f-static.net/uploads/4383916/normal_5f95c98d51073.pdf
    • https://cdn-cms.f-static.net/uploads/4419637/normal_5f973c457756c.pdf
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/837046.pdf
    • https://cdn-cms.f-static.net/uploads/4389370/normal_5f96d60c89978.pdf
    • https://cdn-cms.f-static.net/uploads/4380887/normal_5f974a61afc93.pdf
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/faxipulitafipej_delegusisamugu.pdf
    • https://cdn-cms.f-static.net/uploads/4425759/normal_5f9adccdced70.pdf
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5f8c7ff4dcf29.pdf
    • https://cdn-cms.f-static.net/uploads/4383800/normal_5f95f4b30b602.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bokofapig/how_to_make_aquaponics_system.pdf
    • https://s3.amazonaws.com/kavitokolezub/arrl_handbook_2019_download.pdf
    • https://s3.amazonaws.com/jazuravazaguz/learn_to_fly_idle_hack.pdf
    • https://s3.amazonaws.com/faluzotixupi/zozogeg.pdf
    • https://s3.amazonaws.com/memul/epf_non_employment_certificate.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a84.bin
41afeb86cf81523a4e41a5132b052146fbbe8bbf972a77200d1d06d2827d3c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A84 4856 bytes
font_01_sfnt_off00009af4.bin
5914173d3e8c9c51ffdd7f8309daf8675109e3d9dbd3df5b765ae030f7a5dcc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF4 11076 bytes

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