MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a significant number of links pointing to external PDF files hosted on various domains, with several heuristics indicating a link farm pattern on compromised CMS uploads or disposable hosting. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the structure suggests a malicious intent to redirect users to potentially harmful content, possibly for SEO poisoning or further distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9954
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 http://btsoft.vn/uploads/files/bejilagemabonufojibojeruv.pdf In PDF document text
- https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/90a2000c28f8c0853f245a7b32136b9a/bewunokazosuribedixime.pdfIn PDF document text
- http://sladkiy-ostrov.ru/userfiles/files/82916272168.pdfIn PDF document text
- http://infosierra.es/images/editor/71406957368.pdfIn PDF document text
- https://hotelite.in/userfiles/file/zogitupafe.pdfIn PDF document text
- https://mandarinusa.com/userfiles/file/1630737209.pdfIn PDF document text
- http://webursitet.org/Files/file/pedesutunatarufazirom.pdfIn PDF document text
- http://www.maderas-navarro.com/ckfinder/userfiles/files/xinotufato.pdfIn PDF document text
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/9b2800958e3a4eea43feb2e31ad504f4/78281157716.pdfIn PDF document text
- https://ww150007.linebot.net/upfile/files/20210926223708.pdfIn PDF document text
- https://sayurmateng.com/contents/files/lolirukufujudusigan.pdfIn PDF document text
- http://starcity-vinhomes.vn/app/webroot/img/files/jojafuzadugedaladubesir.pdfIn PDF document text
- https://elsadaulte.com/ckfinder/userfiles/files/xazamukinijilovavunupox.pdfIn PDF document text
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/161343220dff77---rorasezozasones.pdfIn PDF document text
- https://kawanmto.org/contents/files/48504768544.pdfIn PDF document text
- http://bolshunoff.ru/images/wysiwyg/file/zaniwolazonogekimuva.pdfIn PDF document text
- https://dmitrovka-zn.ru/admin/ckfinder/userfiles/files/36375514839.pdfIn PDF document text
- https://kabelkyaobuv.sk/editor_uploads/files/vadesawigej.pdfIn PDF document text
- http://jumpstart.mobi/ckfinder/userfiles/files/janojomexaxadulena.pdfIn PDF document text
- http://akcihlar.cz/userfiles/file/86996795585.pdfIn PDF document text
- http://boldino-hotel.com/ckfinder/userfiles/files/2453608859.pdfIn PDF document text
- https://ddnepal.com/assets/userfiles/files/vifomi.pdfIn PDF document text
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142dbc81b4e7---gibamiz.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=aesthetic+live+wallpaper+androidPDF link annotation
- https://b2cdemo.tickets.com/content/files/fenomolopumorow.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_off0000afa7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAFA7 | 10744 bytes |
SHA-256: f83b7e2dd042e95b3c806ac7e0d0a2da7ec5b6d40560a20fa25548295eab041d |
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font_01_sfnt_off0000c867.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC867 | 14948 bytes |
SHA-256: cd7695a15a22b94c2fd16f274d932567a2fa1c78149813be44d7fbe10f48695c |
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font_02_sfnt_off0000ee5c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE5C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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