MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was identified as malicious by an ML classifier. It contains a large number of external links, many of which point to disposable hosting, suggesting it is part of a link farm designed to drive traffic. The embedded URLs, such as 'https://infrive.ru/pbw?utm_term=ks3+printable+worksheets+english', are likely intended to redirect users to malicious or ad-filled websites. No scripts were extracted, but the PDF structure and heuristics indicate a malicious intent to redirect users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 5
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://infrive.ru/pbw?utm_term=ks3+printable+worksheets+english PDF link annotation
- https://cdn-cms.f-static.net/uploads/4383300/normal_605f71a4d3044.pdfIn PDF document text
- https://weziriditovi.weebly.com/uploads/1/3/4/1/134108838/laxivopojoxu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446944/normal_6065a8972f8de.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479445/normal_603e32950ec66.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465024/normal_601f8f5b6c738.pdfIn PDF document text
- https://tisudarolajese.weebly.com/uploads/1/3/0/8/130813738/kemifun.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424341/normal_60323952cb4e8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368762/normal_606bc3c59e083.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420597/normal_606e7e2f8cb6e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460678/normal_5fd7e26d73c3f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408186/normal_605b15ce9521b.pdfIn PDF document text
- https://mabamakozipapap.weebly.com/uploads/1/3/4/3/134315796/dekol.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369923/normal_6034873bf2777.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://moxulolo.pbworks.com/w/file/fetch/144754152/60235140168.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fb2748de-709a-4932-8933-de86698938cd/peliculas_de_accion_completas_en_espaol_de_van_damme.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/89b316e4-ae9a-4163-8439-9f5af0e80b9c/does_aldi_have_gluten_free_items.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1c755782-33f8-4d13-b89f-eb03839bfa67/notus.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0efc572-830b-4409-b4ab-a64a27ea32fd/how_to_fix_electric_oven_not_heating_up.pdfIn PDF document text
- http://vazesuna.pbworks.com/f/how_do_you_calculate_cross_sectional_area.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f20e9f62-ad0e-4d19-986a-87daf8338239/gatopamexiriwarega.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ca48b091-56a8-488d-9303-4d057c7a9869/rikafakutumov.pdfIn PDF document text
- http://tuvovazuvezo.pbworks.com/w/file/fetch/144631044/gta_5_best_vip_work_solo.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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ed74.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED74 | 5296 bytes |
SHA-256: 72686d5cb317cbddbf92273253e0721977af5781ad1da402a9b968ab96b2f98d |
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font_01_sfnt_off0000ff73.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF73 | 10732 bytes |
SHA-256: 82aa91f53cdadb83d10323c7a5a8f12ebc4a0128bb5a3a6016b7e245d8c53c9a |
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font_02_sfnt_off000123a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123A5 | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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