MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to redirect users. The ML classifier strongly flagged this PDF as malicious, and heuristics identified it as a link farm on potentially compromised or disposable hosting. The primary purpose appears to be directing users to malicious content or phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 5
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://chcial.ru/uplcv?utm_term=relation+between+lambda+and+frequency PDF link annotation
- https://melz-feu.ru/upload/kakokur.pdfIn PDF document text
- https://lionkingbali.com/uploads/file/99829976484.pdfIn PDF document text
- http://lhdrum.com/User_File/UpFile/file/20210913111618_NzMxMjgwMTMxODI=.pdfIn PDF document text
- http://impex-italia.it/userfiles/files/rudubivemabijowez.pdfIn PDF document text
- http://kurier48.pl/files/userfiles/file/satuxegevapexosipavuma.pdfIn PDF document text
- http://thetestmag.com/userfiles/files/gebinogasukokubevimulowej.pdfIn PDF document text
- http://naasschoolofmotoring.ie/fckeditor/userfiles/file/55437556910.pdfIn PDF document text
- https://norservis.info/files/files/60141081479.pdfIn PDF document text
- http://sbnjl.com/userfiles/files/josevegofepelebi.pdfIn PDF document text
- https://cpsguffanti.com/uploads/file/46664693875.pdfIn PDF document text
- http://africanhairbraidingsalon.com/userfiles/file/xudizajupapuj.pdfIn PDF document text
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16132ad6950927---95415580728.pdfIn PDF document text
- http://easyreturn.store/userfiles/file/36498249313.pdfIn PDF document text
- https://by-express.com/upfiles/editor/files/27713018685.pdfIn PDF document text
- http://dirpub.org/editor/ckfinder/userfiles/files/tugozapepofewazusogolaro.pdfIn PDF document text
- http://art-ball.net/files/file/kikubejuzuvapexe.pdfIn PDF document text
- http://daliangluyinpeng.com/userfiles/file/54004288077.pdfIn PDF document text
- http://cisseo.net/userfiles/files/bomimegevevaserun.pdfIn PDF document text
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/8ru231vv3tov293ggndueu5d05/tajibesodumagek.pdfIn PDF document text
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161451d9ddbe61---pusepemazenisepaxokuxuj.pdfIn PDF document text
- http://damutech.kz/upload/2021/09files/210910020610942034fkggp.pdfIn PDF document text
- https://eric-parnes.shortex.com/ckfinder/userfiles/files/57975624887.pdfIn PDF document text
- http://sethhukumchandschool.com/userfiles/file/dubabu.pdfIn PDF document text
- http://vitali-schulz-eiskunstlaufen.de/userfiles/files/mowapesuvegip.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b056.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB056 | 16412 bytes |
SHA-256: fcff62090999313822bbcf8ecd290f2b27c603acdabc8befb2ef9ec12157b042 |
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font_01_sfnt_off0000da68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA68 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f27f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF27F | 11100 bytes |
SHA-256: 4221669de8659beec9c3ef2a06176e83020b5e7c95d1c78d3870941f2de88ef4 |
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