MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, many of which are hosted on disposable domains and utilize UTM parameters, indicating a link farm designed for SEO manipulation or phishing. The primary URL, zajinet.ru, is suspicious and likely serves as a gateway to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://zajinet.ru/strik?utm_term=cuckoo+clock+repair+manual+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4393637/normal_600e62e44d6fe.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4465277/normal_5fe45ca45885c.pdfIn PDF document text
- https://cdn.sqhk.co/xasurila/oRghgij/sikepoxozinugelalilovunas.pdfIn PDF document text
- https://cdn.sqhk.co/lexaxemiji/jjX2jif/best_werewolf_movies_2017.pdfIn PDF document text
- https://cdn.sqhk.co/puberufibo/hXQgeIk/castaway_cay_map.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457854/normal_603914f183b9c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366407/normal_604739b55ad1c.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/535fc732-30c2-49d3-a104-d1d5771fcfc0/2684737317.pdfIn PDF document text
- https://7ed1f289-57d1-4e2a-9ee4-b64e0eb498cf.filesusr.com/ugd/13dc0c_7eb0e83be0f5488db7282df7d790c7f9.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/60f24835-135b-41b5-a198-edf7a1eb9c8d/where_is_lucifer_described_in_the_bible.pdfIn PDF document text
- https://33fe1336-4051-433c-b691-b763732126dd.filesusr.com/ugd/6c8f37_db8eaa6611ca4b769fd852a0a42d8569.pdf?index=trueIn PDF document text
- https://7be326e9-a1fd-4761-a84c-83c904220737.filesusr.com/ugd/37e945_818bec2d6a7346309bb05a60b6b4e816.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/79f1fa5e-9bdb-4713-9b77-10d8a67ad133/how_to_set_volume_on_verizon_fios_remote.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5472cef8-3d3e-46b0-9a75-74a08198bf01/que_es_el.signo_ascendente.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/13e66e8c-0501-4856-9f70-0fcc5813cfec/what_is_model_3_track_mode.pdfIn PDF document text
- https://7ed754b6-a209-4558-9281-0032c7ee8ade.filesusr.com/ugd/4329d7_0faf4fd9b8d644ed96e0c27f2a83b5a8.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/86303065-c02d-4acf-a319-b0816d432a3e/67755279767.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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f324.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF324 | 5092 bytes |
SHA-256: e7eda70b4c29225da8d7b48d58db5459443bbb9817ebe641ae5e5eb1dd1910a0 |
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font_01_sfnt_off00010460.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10460 | 10636 bytes |
SHA-256: d6f7ff93cdba7f0bae9e8b1304159b8d3ea155dd27e45c64853edfb8a787ee2f |
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