Malicious PDF — malware analysis report

Static analysis result for SHA-256 508b6787647f005f…

MALICIOUS

PDF

43.3 KB Created: 2020-10-16 01:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 48f703f4c0a0ef31a424888280f2e59d SHA-1: e863060f6c9d892bf85f77a784f4785e329e1a7b SHA-256: 508b6787647f005f743c1325f508ff2cc97a1f4800714ee49b4cccee4eb1d3ee
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://cctraff.ru/strik?keyword=rome+2+total+war+arverni+guide In PDF document text
    • https://site-1048550.mozfiles.com/files/1048550/jasuvarawu.pdfIn PDF document text
    • https://site-1043873.mozfiles.com/files/1043873/36644000695.pdfIn PDF document text
    • https://site-1039435.mozfiles.com/files/1039435/zetajixiluleku.pdfIn PDF document text
    • https://site-1048172.mozfiles.com/files/1048172/femodesibarafadopijar.pdfIn PDF document text
    • https://site-1043199.mozfiles.com/files/1043199/pigidesiw.pdfIn PDF document text
    • https://site-1043764.mozfiles.com/files/1043764/kelakajefidazula.pdfIn PDF document text
    • https://site-1039950.mozfiles.com/files/1039950/32227204686.pdfIn PDF document text
    • https://site-1040766.mozfiles.com/files/1040766/7594511872.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f874c7e036e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5f8774d1c53b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5f87c635304fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f87a09e24664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f88c1a5272ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368760/normal_5f88ae9777a8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369315/normal_5f87bbce008bb.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/sumavi.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/visepijejasikari.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/01ab4a28-9c15-4d99-850d-81edcd20c2fd/difabano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3fe1656-73d5-49b5-bfb7-f198be179d1c/62854255621.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1cc8a51-f1c3-4747-8e4f-2dfbfaebcb25/31055319977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba1e3e7b-245a-473a-998e-88a4ec739063/20128351930.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14e4b0df-fb0a-4485-98ff-db0499f39e2d/gitororilaretinetageles.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_off00006b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0D 5256 bytes
SHA-256: 1b05a12c599c58e4913bbcac4133eb2784f425f272848dde41f20be94012d423
font_01_sfnt_off00007ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CED 10296 bytes
SHA-256: c7e383b39d8f2ef655af48c36d778899d1729d81c86607f9e843732f1b9e9444

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