MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs that point to compromised websites and disposable hosting, indicative of a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The presence of multiple PDF-specific heuristics related to URI and link farms reinforces this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://medvor.ru/uplcv?utm_term=voice+changer+app+male+to+female+download PDF link annotation
- http://www.pattyn360.com/upload/forum/files/famesanutosurenajibutizu.pdfIn PDF document text
- http://sro52.ru/uploads/files/85811276263.pdfIn PDF document text
- http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mumidorewokiwag.pdfIn PDF document text
- https://1tlstar.com/storage/uploads/files/52597813488.pdfIn PDF document text
- http://fantacyhandicraft.com/userfiles/file/67325363370.pdfIn PDF document text
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614099cbe3f15---zubilowozovufis.pdfIn PDF document text
- https://ispartaorganizasyon.com/ckfinder/upload/files/todedujirub.pdfIn PDF document text
- http://www.sudaff.com/pics/file/fivip.pdfIn PDF document text
- http://sungder.com/upload/wekimemasetemepejeduj.pdfIn PDF document text
- https://mahanakhon.pacedev.com/ckupload/files/7016050833.pdfIn PDF document text
- https://johanbjerke.se/userfiles/file/foxojigaxapajabofatenemi.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161316feddb9d7---dudasisun.pdfIn PDF document text
- https://sanghvicranes.com/staging/media/bonukesununasoda.pdfIn PDF document text
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614132838e577---42686337974.pdfIn PDF document text
- http://telektrans.hu/editor_up/72597087129.pdfIn PDF document text
- https://avflash.nl/upload/files/9517289791.pdfIn PDF document text
- http://alrehabourhome.com/userfiles/files/20826359782.pdfIn PDF document text
- http://ephtour.com/FileData/ckfinder/files/20210911_C9D0437B019E3539.pdfIn PDF document text
- http://bukharageorgia.com/sites/default/files/file/95899044422.pdfIn PDF document text
- http://sgrappresentanze.eu/userfiles/files/50738564981.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_off0000d3da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3DA | 18232 bytes |
SHA-256: 60ea90e225344c98f065482199d480facaabe42620be8a3658e80cd7aa08ac73 |
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font_01_sfnt_off0001024d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1024D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011a64.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A64 | 10952 bytes |
SHA-256: f8ce3d28c5656a923a5b487f7da1e4a342a930ed940c410e4c60f0e0d91e3a46 |
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