MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external links, many pointing to potentially compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The presence of multiple PDF-specific heuristics related to link farms and compromised uploads reinforces this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://infrive.ru/uplcv?utm_term=best+piano+tiles+game+2021 PDF link annotation
- http://honderhotel.com/UploadFiles/FCKeditor/20210916065212.pdfIn PDF document text
- https://szabobuszberles.hu/files/files/rajekamavirobofurewevone.pdfIn PDF document text
- http://allier.proximeo.com/ckfinder/userfiles/files/31310198904.pdfIn PDF document text
- http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161355fc36ac3d---kilakuxufi.pdfIn PDF document text
- http://sowiik.pl/userfiles/file/xiduwawotigagujoruvanitax.pdfIn PDF document text
- https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/3866a2c1d9a47614954c375e97f79e06/mujiwomi.pdfIn PDF document text
- https://gadd-asso.org/userfiles/file/1554985356.pdfIn PDF document text
- https://adesso-moosburg.de/images/file/gurerewunijigapaxepi.pdfIn PDF document text
- http://novastal.pl/userfiles/file/maponi.pdfIn PDF document text
- http://industrialsupplies.pk/userfiles/files/jowesobetesilujedakumuker.pdfIn PDF document text
- https://n-v-v.dk/userfiles/file/lefilisu.pdfIn PDF document text
- http://forglass.sk/userfiles/file/62994056072.pdfIn PDF document text
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614229fd914b1---vevel.pdfIn PDF document text
- http://exmar.it/foto_fck/file/fobolodi.pdfIn PDF document text
- https://menokatea.in/ckfinder/userfiles/files/xetupoz.pdfIn PDF document text
- https://ibextrail.com/editor-images/2067531581.pdfIn PDF document text
- http://gramercy-grand.ru/files/file/14042202898.pdfIn PDF document text
- https://perfecthospitals.com/ckfinder/userfiles/files/funesipalupowikidanum.pdfIn PDF document text
- http://www.masozilina.sk/ckfinder/userfiles/files/jodusopabixelosid.pdfIn PDF document text
- http://letsfinal.com/userfiles/file/84554591825.pdfIn PDF document text
- http://mebelhotel.ru/userfiles/files/dibarigafolewu.pdfIn PDF document text
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/161323bab00c5e---68760700998.pdfIn PDF document text
- https://santechnikosdarbai.lt/images/files/laragipowokezuzogabapoji.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_off0000ecc2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECC2 | 10840 bytes |
SHA-256: 248d9e31c59c7beeda0e22d103f46dc11bfabf12dac1c96f93459604acd62dd8 |
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font_01_sfnt_off000105e2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105E2 | 20640 bytes |
SHA-256: e8af012f73e9f494a2de27aa60831cb6920c108a1bb265313390202e4c58ce6a |
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font_02_sfnt_off00013bc6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BC6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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