MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to obscure malicious destinations. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs and a 'download' button lure further support this, indicating the document's purpose is to trick users into clicking through to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://krisoc.ru/pbw?utm_term=english+for+engineers+by+sudarshana+pdf+free+download PDF link annotation
- https://static.s123-cdn-static.com/uploads/4456166/normal_5ff3ec1135462.pdfIn PDF document text
- https://tatamanigo.weebly.com/uploads/1/3/5/2/135299517/finegeru.pdfIn PDF document text
- https://senaduwofajix.weebly.com/uploads/1/3/0/7/130775021/biduzogugigajij.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368485/normal_601b45ce71fa5.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4449170/normal_60b0065a33a45.pdfIn PDF document text
- https://wogazisaralo.weebly.com/uploads/1/3/1/1/131163660/sudalupimese-kirosatukilew-sutizovubidoma-forovisozobe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389599/normal_6017988f6d2c0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401696/normal_6058e495cd59d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://mumasenekera.pbworks.com/w/file/fetch/144426759/todipixawonojewezizu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/761c9b8b-494b-4b00-80b5-886b5e72150e/what_jobs_can_you_get_with_a_marketing_management_degree.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4ed0b0bf-6bd7-4cab-9f5e-a1e7f337a513/temiwomosarafubove.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cd451d5e-6db1-4a1f-81a1-d10c147c8f7a/67516906277.pdfIn PDF document text
- http://sijomirurefi.pbworks.com/f/jevebikukaxavara.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8b102a5d-26f8-4d8f-8ab5-c7d8c30ec9d8/dodge_ecm_repair_near_me.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c5d39e79-91da-4a78-9ef0-92e303fff8ed/agatha_christie_novels_full_list.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b28841b8-8191-4428-b1d9-1039d49f8213/the_last_song_full_movie_free_no_sign_up.pdfIn PDF document text
- http://sepaxebi.pbworks.com/w/file/fetch/144417459/what_is_bruno_mars_fathers_name.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_off0000e373.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE373 | 5596 bytes |
SHA-256: bd454b8dd6b05d8decfe7c5e89822a88379203ba6544db3d0836eea86a0f5323 |
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font_01_sfnt_off0000f691.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF691 | 10212 bytes |
SHA-256: 06dcb52bf63fec60695d156e748ac2e9cd766abfa41bc2a216165deda0952398 |
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