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 WordPress sites. The ML classifier strongly indicated maliciousness. The presence of a link farm on disposable hosting and compromised CMS upload storage suggests an attempt to obscure the ultimate destination, likely a phishing or malware distribution site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160949e2b8f90a---57476768980.pdf In PDF document text
- https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7a190bc2d---punaridipiso.pdfIn PDF document text
- http://aristosaigonhotel.vn/uploads/files/20830259931.pdfIn PDF document text
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d35daeecaf8---devuporifikajilerexanuwi.pdfIn PDF document text
- https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609413f9675fe---4382511951.pdfIn PDF document text
- http://nage-z.com/ckfinder/userfiles/files/fujalavevibivaru.pdfIn PDF document text
- http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608df03ef167f---4245841129.pdfIn PDF document text
- https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/ed01c169349f86d87b51e7e58f6f46b9/daxixoximipuvivivozuvobug.pdfIn PDF document text
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161118c8b3a188---binudusemo.pdfIn PDF document text
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/evs09eaq26e95mp2257g26sr34/daxixukulupesizodo.pdfIn PDF document text
- http://pwr-tech.ru/userfiles/file/kufejolexa.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc1bf9b963---jagimetugotigovewi.pdfIn PDF document text
- http://hzjksj.com/images/upload/File/kiburewoferixudubo.pdfIn PDF document text
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612926cfe4afe---letaluvanetifofo.pdfIn PDF document text
- http://beepost.vn/upload/userfiles/files/zazaxomedaxuk.pdfIn PDF document text
- http://fratellilongoni.com/userfiles/files/9424534181.pdfIn PDF document text
- https://rsun.pro/admin/ckfinder/userfiles/files/61738499886.pdfIn PDF document text
- http://qazaqbanki.kz/data/content/files/66834002287.pdfIn PDF document text
- http://k-ookuma.com/js/upload/files/61255797943.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3aca51605---98612924450.pdfIn PDF document text
- https://bustotoronto.com/userfiles/file/pofanolo.pdfIn PDF document text
- https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160abcfecf0949---85930729608.pdfIn PDF document text
- http://asupuro.com/upload/save_image/files/73366575845.pdfIn PDF document text
- http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d9eeeca90---sagojemixo.pdfIn PDF document text
- https://montpellier-business-plan.com/mbp/upload/images/images/upload/ckfinder/jibavedizupukofedusom.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=official+rules+of+basketball+pdfPDF 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_off0000baa6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBAA6 | 18020 bytes |
SHA-256: 6450dc309d6f8f0968054e8743aeab46a9884f3111b069113a11c5b7e4bbae96 |
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font_01_sfnt_off0000e780.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE780 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ff97.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF97 | 10868 bytes |
SHA-256: 16242a0f191d96f1617fe2807091b3bae8ba1a0c9ec3a5d38e0908ad211bca1d |
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