MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, embedding numerous URLs that point to various domains, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights this behavior, suggesting the document's purpose is to redirect users to external sites, potentially for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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://synerhu.ru/uplcv?utm_term=lego+batman+3+apk+data PDF link annotation
- http://hwayinn.com/image/files/20210905_024629.pdfIn PDF document text
- http://df-2.de/images/daten/file/xuwon.pdfIn PDF document text
- https://vwb.mrv-educationservices.com/content_file/files/nezow.pdfIn PDF document text
- http://diysmart.net/userfiles/file/joxibirabitegizuganone.pdfIn PDF document text
- http://tkhomedeco.com/assets/uploads/ckedit/files/20210907192513.pdfIn PDF document text
- https://bharatceramics.in/ckfinder/userfiles/files/bijabizetezaka.pdfIn PDF document text
- https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/465a2af97bd8d7418dd958dcf5f74a04/14367308115.pdfIn PDF document text
- https://hsiaoying.com/userfiles/file/dituzon.pdfIn PDF document text
- https://unosms.us/userfiles/file/69876965935.pdfIn PDF document text
- https://readandenjoy.ae/userfiles/files/67086028153.pdfIn PDF document text
- http://stroytehcentr.ru/images/file/vuvejijudapi.pdfIn PDF document text
- http://www.scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/tifewarevozufobatigotuko.pdfIn PDF document text
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/e18bacc45ed668e00f331c88918c1a85/torof.pdfIn PDF document text
- http://elcivan.com/admin/UserFiles/file/vifarowusitarulax.pdfIn PDF document text
- https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161312171aa96d---vozogarotewazamumobe.pdfIn PDF document text
- https://maturana.cl/upload/file/vuvojepivepesalekeze.pdfIn PDF document text
- https://pagodatalk.com/_UploadFile/Images/file/68310625128.pdfIn PDF document text
- http://ig-einheitsloks.de/medien/file/tixalajimonowodatogobu.pdfIn PDF document text
- http://31kouqiang.com/userfiles/file/1631321607.pdfIn PDF document text
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/0fdf6eeac4591b41027f87f10043b315/sizumalutuxabeparamupekas.pdfIn PDF document text
- http://antoniolescio.net/userfiles/files/70046515508.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_off0000bbd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBD0 | 10688 bytes |
SHA-256: 495cdf5460074023316c2b920b914fad5ac053c6a7ce6ce22d9eb09cfe412728 |
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font_01_sfnt_off0000d3e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3E6 | 19620 bytes |
SHA-256: 2051ac263422ac18ea1ff7d65d2b3b7b15f07652766f812de54b0e1d7d3765be |
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font_02_sfnt_off000104f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104F9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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