Malicious PDF — malware analysis report

Static analysis result for SHA-256 699a401e86670ca1…

MALICIOUS

PDF

43.7 KB Created: 2020-10-01 09:06:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 583480e0fbaaac6f83b1924b30b2c877 SHA-1: d91d4f557a6c62d774ce4fd4320a6f7f54472853 SHA-256: 699a401e86670ca1e69a30897b3d12c3efd840ce3e49b16eb8897b379fd55343
124 Risk Score

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 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://gettraff.ru/strik?keyword=captopril+sublingual+bula+pdf In PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/78088261875.pdfIn PDF document text
    • http://files.danielaneri.eu/uploads/1/3/1/0/131070561/534327.pdfIn PDF document text
    • http://nuxituna.pineridgereconciliationcenter.org/uploads/1/3/1/1/131163898/5935978.pdfIn PDF document text
    • http://posena.wamplerandpiercelaw.com/uploads/1/3/1/8/131856703/768354.pdfIn PDF document text
    • http://files.ipegmarc.com/uploads/1/3/2/7/132740193/koxexoliw.pdfIn PDF document text
    • http://files.kristasharmonymusicstudio.ca/uploads/1/3/1/4/131454143/3a76e994a0.pdfIn PDF document text
    • https://site-1037152.mozfiles.com/files/1037152/zotisiniv.pdfIn PDF document text
    • https://site-1036869.mozfiles.com/files/1036869/bukenipe.pdfIn PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/levediwaxirumebasat.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/1/0433/9807/0435/files/linear_motion_guide_rails.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6027/2808/files/42623893231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6467/5752/files/xray_1._12._2_texture_pack.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_off00005dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC8 5136 bytes
SHA-256: 392220eb24597dbd0eddfed0e852b89ba9308fc0bb5a4daa3057cc777f1edee7
font_01_sfnt_off00006f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3B 11276 bytes
SHA-256: 28cb26584285aa0af99501cbe0029bd7fc73c4d0bca0f84af8d690bb4086f095
font_02_sfnt_off000093d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D9 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378