MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a large number of embedded URLs, many of which point to compromised WordPress sites or disposable hosting. The ML classifier strongly indicated maliciousness, and the structure suggests a link farm designed to redirect users to potentially harmful content. No scripts were extracted, but the primary attack pattern involves luring users through malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9639
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://krisoc.ru/uplcv?utm_term=standing+besides+or+beside PDF link annotation
- http://ohsclassof73.com/clients/9/9a/9a21b0b253f7c4eafe662346d237c286/File/tefevavibepejoramo.pdfIn PDF document text
- http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ca4174b4f21---wifujesexa.pdfIn PDF document text
- http://mkngsp.ru/upload/files/26356835678.pdfIn PDF document text
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ecd79839a---73374276538.pdfIn PDF document text
- http://kripasec.com/userfiles/file/42887181018.pdfIn PDF document text
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/dc1e6b4f473ddcc2b6231e4bb6651916/13937806775.pdfIn PDF document text
- https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/459c7a89a54f1fe6114022bf288cdc90/zasokuxikovip.pdfIn PDF document text
- http://goref.ru/files/file/87999668138.pdfIn PDF document text
- https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/162907a964a1f9cf4a8883c777fca2f8/11184770948.pdfIn PDF document text
- https://vannordenvastgoed.nl/userfiles/file/sipisugi.pdfIn PDF document text
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609214faa9b36---lotolivefexabupejifegavu.pdfIn PDF document text
- http://baugeraeteverleih.de/benutzerdateien/gozegizajudomekeladulevi.pdfIn PDF document text
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7371441bd---vowexenejevu.pdfIn PDF document text
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/1v9smp2c6tch70874vll2t1gn1/notixofesizavoj.pdfIn PDF document text
- http://choinka4x4.org/cms/files/file/monimugi.pdfIn PDF document text
- http://elsekmont.eu/userfiles/file/vubud.pdfIn PDF document text
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/0613df6c6bfc9c8307b6d64a8982b1fb/53749194568.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/tq4807amtihupve4lps5t7uhmi/92505516154.pdfIn PDF document text
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1606ced8f04e3a---58253547226.pdfIn PDF document text
- https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/5sddic55anuqhet2tkk0k2u3h2/tamamofuturolanezawafap.pdfIn PDF document text
- https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b627a50f3b2---78393178058.pdfIn PDF document text
- http://jrmhandling.nl/upload/file/terulizi.pdfIn PDF document text
- https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/1afeaa153b247433b8a1f566ebe28159/meruxijusomekul.pdfIn PDF document text
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/3787895b1c5caf7a8a240b4d8b30a99a/lukuruzela.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608312ea1b0bb---talabilosukelote.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_off0001a9d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A9D2 | 18272 bytes |
SHA-256: c8978d2d65b36b2d32a49b38fcbb1edb69ef48377fef7a3c5683d6c7b5fd8b53 |
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font_01_sfnt_off0001d920.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D920 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001f137.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F137 | 10592 bytes |
SHA-256: 5588417be922f60c65338e0c962e49bd07fa82112425f2f0738649cd997b5843 |
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