Malicious PDF — malware analysis report

Static analysis result for SHA-256 2372337d4eb1948f…

MALICIOUS

PDF

41.9 KB Created: 2020-10-16 02:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: db6658bfa05dae4c5d01ee07fb04fcc8 SHA-1: 6288e49508b9635e2a9ebec605f491e0fe580b7e SHA-256: 2372337d4eb1948f2ac655d0d6d635ffcbfd622fcc7ce98145dac272f6fdd696
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://ggtraff.ru/strik?keyword=makalah+zat+aditif+dan+zat+adiktif+pdf In PDF document text
    • https://nasinapalu.weebly.com/uploads/1/3/0/7/130739684/2916050.pdfIn PDF document text
    • https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/450357.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/9004823.pdfIn PDF document text
    • https://xodetawutal.weebly.com/uploads/1/3/0/7/130774968/6568708.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/539333.pdfIn PDF document text
    • https://tiwilofudux.weebly.com/uploads/1/3/1/6/131606348/1350966.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/4094919.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370540/normal_5f88c279e37ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_5f88dcf839410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5f884f83cacaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5f876a72062c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f875bd5bbdce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367017/normal_5f878ceccc857.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5f88a1003f527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f88c0d8790b1.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/7011022.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/cd3619fef1.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/fcae7cd9-5a43-4d7b-b9d3-f28a87df13c0/nufudepavudifosupigule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8159b00e-c825-433e-8594-e96d6379c0bf/felifujemovakiwelebip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e87284e-3700-4963-af70-ca1690159023/doriwosanawaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f8a11d2-6d72-4d43-9e99-8864c4816bfc/xiseluvitifegetozono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88625d52-faf8-4f53-8e80-2630bf81d5a7/36775706397.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_off00006788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6788 4976 bytes
SHA-256: 0dbf5ef8620dd3b5b26a9f218c7f1217989b2b343396a8e54387b475dce659e9
font_01_sfnt_off0000787e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787E 9952 bytes
SHA-256: 3e186392adc4b72f02cda910cb6d9fd80fe77903da6686f719a03b642aa21303

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