MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://inwebjor.ru/uplcv?utm_term=hipertiroidismo+secundario+pdf PDF link annotation
- http://suankaew.net/upload/userfile/files/65693787017.pdfIn PDF document text
- https://mimpishio2bet.com/contents//files/tapigotalatokizaberamomub.pdfIn PDF document text
- http://caphegiabao.com/upload/fck/file/kifep.pdfIn PDF document text
- http://aircond.md/upload_fck/file/dubajunatanomulejodipu.pdfIn PDF document text
- http://collegedelunion.com/clients/76066/File/15016631450.pdfIn PDF document text
- http://nktrading.qa/file/files/23297421636.pdfIn PDF document text
- http://maraulsan.com/ckfinder/userfiles/files/59270373995.pdfIn PDF document text
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/kdanllo98ai44k037qmi37slu5/tajigurixajumarunujel.pdfIn PDF document text
- https://perfecthospital.net/ckfinder/userfiles/files/72708791239.pdfIn PDF document text
- https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/946c61f4c3ecfb6c1dd95978d5c49a22/69301560117.pdfIn PDF document text
- https://makanbanyak.net/contents//files/kanudakufovumo.pdfIn PDF document text
- https://casadko.fr/userfiles/file/4925071978.pdfIn PDF document text
- http://versobrokers.eu/userfiles/files/71587533067.pdfIn PDF document text
- https://dcmheavyequipment.com/admin/images/file/5780055170.pdfIn PDF document text
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3f6857ed39---sateli.pdfIn PDF document text
- http://rallyteamwalraven.nl/file/fufesubodorodirofudat.pdfIn PDF document text
- http://qkmedica.com/uploads/userfiles/file/25047142319.pdfIn PDF document text
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/f4f6bd219795939248c48fe5951f7463/11454825118.pdfIn PDF document text
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16073379e259a5---71806909348.pdfIn PDF document text
- https://styliststudios.com/imagesTE/file/9869969120.pdfIn PDF document text
- http://mp-journal.com/media/file/fafom.pdfIn PDF document text
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae3cc5b173c---54492551519.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_off0000bc2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC2C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d443.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD443 | 10824 bytes |
SHA-256: e0d717d9e26739d33cef95a1054bc9506e635776814578d8eb4582055d63834b |
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font_02_sfnt_off0000ed2f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED2F | 16728 bytes |
SHA-256: 04796b704c34f57bc2fdd4355344dcae189f4806b6a8bfbf4b03ce81da0d121a |
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