Malicious PDF — malware analysis report

Static analysis result for SHA-256 082ae2e405b9c2e3…

MALICIOUS

PDF

37.2 KB Created: 2020-08-05 02:00:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae0928ff75ac47ef90cc43ce4bcf6ef5 SHA-1: 498999e9cfdcdf6e20a23a25f0cdcfefe906f9c3 SHA-256: 082ae2e405b9c2e3be7f3f6f6a076f8dc121aea9581e06e06720deb202e0d807
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, masquerading as a catalog, which are designed to redirect users to external websites. One of the primary links, 'https://ttraff.ru/pify?keyword=catalogo+eudora+ciclo+5+pdf', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to lead users to malicious or unwanted content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.ru/pify?keyword=catalogo+eudora+ciclo+5+pdf
    • http://files.jeanependziwol.com/uploads/1/3/1/3/131383942/7802318.pdf
    • http://files.alifoxtransformations.com/uploads/1/3/1/6/131606866/wafufawovitaz.pdf
    • http://files.jacobdheinz.com/uploads/1/3/2/6/132695405/5173463.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/25283799887.pdf
    • https://cdn.shopify.com/s/files/1/0429/0753/3475/files/oblivion_multiplayer_mod.pdf
    • https://cdn.shopify.com/s/files/1/0434/7923/6760/files/rejagigufosewuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/boerhavia_erecta.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexikebesadunav.pdf
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/juboguzogukaliwisuvigumum.pdf
    • https://cdn.shopify.com/s/files/1/0432/4330/7175/files/86494398852.pdf
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/62208674681.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/81857848564.pdf
    • https://cdn.shopify.com/s/files/1/0430/6262/4417/files/vcf_file_to_converter_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/40798098339.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_off000052e3.bin
70ffe409e34324f5a8ceb0d74e3aaa26bfeea8b954f09b0748337e18ae54b40a
pdf-font-stream PDF embedded font (sfnt) at offset 0x52E3 5176 bytes
font_01_sfnt_off0000648f.bin
73da281ba57986d9a5c9e4bc3f6fa8ea838b861d1bb56ae5563f773be1060634
pdf-font-stream PDF embedded font (sfnt) at offset 0x648F 10812 bytes