MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is a link farm on disposable hosting, suggesting a tactic to redirect users to potentially malicious sites. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 6
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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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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 http://www.psoealora.es/ckfinder/userfiles/files/soniwaniko.pdf In PDF document text
- http://ip-malkov.ru/uploads/files/nanoxeros.pdfIn PDF document text
- https://chiataiec.com/userfiles/Proj_Name/files/ninutozisil.pdfIn PDF document text
- http://i-tos.com/userData/board/file/3430502017.pdfIn PDF document text
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/aa36a53517ec8cbe1d6e51ffa0101d22/23875894807.pdfIn PDF document text
- https://jungleflightchiangmai.jungle-flight.com/Uploads/files/66669934197.pdfIn PDF document text
- http://hidropro.hu/upload/fevimewa.pdfIn PDF document text
- https://xn--49st2et51duvk.com/upload/files/bilop.pdfIn PDF document text
- https://www.prshots.com/ckfinder/userfiles/files/55747876195.pdfIn PDF document text
- http://teleinwestor.pl/userfiles/file/61146532744.pdfIn PDF document text
- http://pileshoppen.dk/userfiles/file/98261399212.pdfIn PDF document text
- http://ibsdhc.hpds.work/ecdemo/web/js/ckfinder/files/files/7108247511.pdfIn PDF document text
- http://airmon.hu/images/files/pejodi.pdfIn PDF document text
- https://indirimlipin.com/calisma2/files/uploads/bejusimafowuworuwolopet.pdfIn PDF document text
- https://qualityroofinnandsuites.com/nbloom/fckuploads/file/20634381517.pdfIn PDF document text
- https://happycolaborativo.com/uploads/files/4310794511.pdfIn PDF document text
- https://kocgrafikavukatwebsitesi.demowebsiteleri.com/upload/files/31735083729.pdfIn PDF document text
- http://thanhnhomdinhhinh.net/uploads/files/23001765395.pdfIn PDF document text
- https://hostsolutions.ro/app/webroot/files/userfiles/files/jujuzoxekaveg.pdfIn PDF document text
- https://cosanuesa.com/componentes/editor/ckfinder/userfiles/files/15720331033.pdfIn PDF document text
- http://ipai-bg.eu/img/file/nofewitanewid.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613032ebe7b9c---kilakubabibalumo.pdfIn PDF document text
- http://mikomisushi.com/uploads/files/wutefobilegogoxolonunokil.pdfIn PDF document text
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135965ce98c5---mixawugomukupati.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=phone+services+apkPDF link annotation
- 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_off0000d88f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD88F | 17816 bytes |
SHA-256: a6117f433c465548a5208aa816927cf42c93c9fbb9a7bb97771bed990c2d6d49 |
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font_01_sfnt_off00010731.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10731 | 10484 bytes |
SHA-256: c6f488c2d8cb71c2ff268838a23f2855645a38352dac1c689ca9f24c00c8873e |
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font_02_sfnt_off00011eff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EFF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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