MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or redirecting users. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates the document is part of a link farm designed to host numerous PDFs on disposable domains, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites via the numerous external URIs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://laborke.ru/uplcv?utm_term=widget+smith+app+android+download PDF link annotation
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9e873d19d---3597227185.pdfIn PDF document text
- http://didopack.com/files/29670417393.pdfIn PDF document text
- https://recrut.com/files/files/bodolurinoniz.pdfIn PDF document text
- https://hgb.se/filer/file/40728277742.pdfIn PDF document text
- https://cafesca.org/ckfinder/userfiles/files/67820225752.pdfIn PDF document text
- https://cauthinh.com/luutru/files/purefopozifelir.pdfIn PDF document text
- http://www.ishvani.com/www/js/ckfinder/userfiles/files/66222451880.pdfIn PDF document text
- https://lbk-ingatlan.hu/uploads/file/dodopug.pdfIn PDF document text
- https://adverto.ee/userfiles/file/fedikujuwize.pdfIn PDF document text
- http://www.mustwalge.ee/data/content/files/3310059734.pdfIn PDF document text
- http://nurugelexport.com/ckfinder/userfiles/files/21685590341.pdfIn PDF document text
- https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/f7ogrivbvd9sjt438ri1f15pqv/7221906567.pdfIn PDF document text
- https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/5slk8hdluhpu03re1novihff8b/5300741149.pdfIn PDF document text
- http://cottoneauto.it/userfiles/files/ranojakasiravilixo.pdfIn PDF document text
- http://vom-ragnaroek.de/uploads/file/wewabida.pdfIn PDF document text
- https://okinawa4d.com/contents/files/fosesatogoroxufinosu.pdfIn PDF document text
- http://druckmaschinenservice.com/uploads/fce/files/54213423971.pdfIn PDF document text
- http://thesciencenetwork.org/uploads/files/tesakujinuvukuxi.pdfIn PDF document text
- http://only-svet.ru/upload/files/xifad.pdfIn PDF document text
- https://omprintandpack.com/userfiles/file/koselimowo.pdfIn PDF document text
- http://1-champagne.com/blog_images/blog_/file/91819299138.pdfIn PDF document text
- https://pindimana.in/uploads/file/vabomazib.pdfIn PDF document text
- http://chatyzvule.cz/uploads/jatunel.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_off0000b910.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB910 | 18580 bytes |
SHA-256: d8567dc12260843941d3d1f6e485b082aa65914005a3bc3085251d405050ed20 |
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font_01_sfnt_off0000e797.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE797 | 10920 bytes |
SHA-256: 4ed9879077dc7a508ecb420a65b48db9a8b04dc0f64c8de1e31c42984dc444f1 |
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font_02_sfnt_off0001007b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1007B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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