Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d6d152183c6750d…

MALICIOUS

PDF

48.6 KB Created: 2020-10-15 13:27:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d5145a08b3e31726ae1a95edcd3daa8e SHA-1: 7e002f067498c95ab8ec2d81dc53b6174940018f SHA-256: 3d6d152183c6750d2eb8aefaf816450137b52f9b74ac11c5ad434341bdbff3b6
184 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 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.
  • 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/123?keyword=osrs+black+dragon+slayer+guide+melee In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f879a8a70577.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_5f872f815cc24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f87449c2b182.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f8735963092a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f877591ee07f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368950/normal_5f879ba3e0c94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368768/normal_5f87d864e83ec.pdfIn PDF document text
    • https://mokitigek.weebly.com/uploads/1/3/1/6/131606839/nuwup-dimavopujuduko-lifinifosepu-vugenejabadan.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/6c26f1410aadb18.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/8d23c.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8c3f11ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f87c2fee94c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5f877e3fb3d2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f86f895d47b3.pdfIn PDF document text
    • https://site-1042104.mozfiles.com/files/1042104/4429502884.pdfIn PDF document text
    • https://site-1038660.mozfiles.com/files/1038660/tokufinabutozevi.pdfIn PDF document text
    • https://site-1048515.mozfiles.com/files/1048515/21823325130.pdfIn PDF document text
    • https://site-1042551.mozfiles.com/files/1042551/kewepaberim.pdfIn PDF document text
    • https://site-1040094.mozfiles.com/files/1040094/80686793222.pdfIn PDF document text
    • https://site-1048209.mozfiles.com/files/1048209/winapetoji.pdfIn PDF document text
    • https://site-1039745.mozfiles.com/files/1039745/40227635931.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
    • 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_off0000714c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714C 5392 bytes
SHA-256: b43406a5a28d67b3f56ef57c26c9792f48fc3c6ff77fd51682098d03f7fd8ffd
font_01_sfnt_off00008380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8380 10420 bytes
SHA-256: 7f4403c70682aea169f1711294de1596cf716cf4424348a694daa19fc5c6c4db
font_02_sfnt_off0000a712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA712 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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