Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d373992556fb783…

MALICIOUS

PDF

41.3 KB Created: 2020-11-01 13:01:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 3cc06eb8d0035100179780a3b9cbd302 SHA-1: 23cc3b9ba8e80ee04c5d8270d05a3aa4fa46445b SHA-256: 7d373992556fb78329875e08b3f3ce4642c2c088513081993399d349d2ada07d
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://ttraff.me/123?keyword=best+manual+juicer+america+s+test+kitchen In PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/9836671.pdfIn PDF document text
    • https://xajoxivanuxus.weebly.com/uploads/1/3/4/4/134432241/buxuvajotutijilusere.pdfIn PDF document text
    • https://misikeni.weebly.com/uploads/1/3/4/3/134336029/javilovu_gitujekekosel.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/wirigo-lunos.pdfIn PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/730211.pdfIn PDF document text
    • https://degujipimisa.weebly.com/uploads/1/3/1/4/131453395/4018385.pdfIn PDF document text
    • https://wizisenax.weebly.com/uploads/1/3/4/3/134320615/zejiw_pumakile_lomubaduze.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/7cd764ada1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380088/normal_5f8aa242b7c3d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1072a491-cef3-40a3-a1af-2b17b26c48a6/fenorojexofiligem.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E4 5228 bytes
SHA-256: d7598bd8b5c17b0789478880c8ba1fd3dce48bdad7f90500c5094f9a3f568610
font_01_sfnt_off0000757e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757E 10284 bytes
SHA-256: e411a87eb0b584ac11e34203ae2f18d5bbda4d2a59b7a71b32ddaa0d7a8a4677