MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains a large number of embedded URLs, many of which point to compromised WordPress sites and disposable hosting. These URLs likely serve as a link farm to redirect users to malicious content, potentially for phishing or malware distribution. The ML classifier strongly indicated maliciousness, supporting the assessment of a malicious link farm.
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://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/fl57sgp52ku7bg9m8icjqdcq82/nanizem.pdf In PDF document text
- http://forter.vn/hinhanh/file/neluwikozutowugawuludes.pdfIn PDF document text
- http://navigator-nsk.ru/userfiles/file/79173860306.pdfIn PDF document text
- https://kermoulin.com/userfiles/file/wawebobaxagar.pdfIn PDF document text
- http://barbusci.it/maisUserFile/file/78505337723.pdfIn PDF document text
- https://irisapp.cn/uploadfiles/fckeditor/20210513/file/16209136396292.pdfIn PDF document text
- https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/jcm76ov5o5llj4h78ak99mnv30/48973453561.pdfIn PDF document text
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa1bb02907---devipupuw.pdfIn PDF document text
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/11b7be6d540ae5a741f693d304f602e2/31929444737.pdfIn PDF document text
- http://podushka.by/files/files/97216512726.pdfIn PDF document text
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160881d41ccfda---fetesulajudufikobupu.pdfIn PDF document text
- https://morganmethod.com/ci/userfiles/files/1332654232.pdfIn PDF document text
- https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c173ddcb816---pabodavuzizuluwerusabar.pdfIn PDF document text
- https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/7a7ad292808faf0c961edc4edd900d5e/73850916124.pdfIn PDF document text
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/d09070d6fc1ca054d785f4f39c63c298/94515357397.pdfIn PDF document text
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd505359dac---54318885462.pdfIn PDF document text
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4e84a3c2d---63873175311.pdfIn PDF document text
- https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/lvbq0aor4ornruk7iigpckabqk/vizoredisaziworedaw.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160b57a19361aa---34198549453.pdfIn PDF document text
- http://castrolmintabolt.hu/images/upload/file/piwak.pdfIn PDF document text
- http://generale-bureautique.fr/gdb/files/file/jusidafopadofexemiginopij.pdfIn PDF document text
- http://lateonsettay-sachs.org/userfiles/file/mepum.pdfIn PDF document text
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/ef2e516ac0cd90ba99661cccd7228259/dazado.pdfIn PDF document text
- https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/d4d70d66b43b670489de51ac76a64f3a/sarupakido.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=an+occluded+frontPDF link annotation
- https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/ee13764edda810282c8a812db6cf4a23/93960604384.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_off0000eb77.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB77 | 10128 bytes |
SHA-256: ad5da2ea9434420cb8d626a229b0d7972255025e66e3cd838115295d6f28c65c |
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font_01_sfnt_off0001023f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1023F | 17920 bytes |
SHA-256: cfbac39105d87ff6c51e4988504743c2132a5e867e0ffc0638220ad50bd68160 |
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font_02_sfnt_off000130af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x130AF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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