MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous external URIs, including one that appears to be a redirector with UTM parameters, suggesting a phishing or malware distribution campaign. The PDF is identified as a link farm on disposable hosting, further indicating malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
Heuristics 5
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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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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://chcial.ru/uplcv?utm_term=11th+cbse+biology+textbook+pdf
- http://fluorescent-training.com/file/6069502387.pdf
- http://taxplus.in/images/contentimages/files/worokinatisapigurov.pdf
- http://www.dfdtrading.sk/ckfinder/userfiles/files/rufeperur.pdf
- http://fillaracingacademy.cz/ckfinder/userfiles/files/xolusi.pdf
- http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161364a720283a---82312529830.pdf
- https://wroclawmodelshow.pl/ckfinder/userfiles/files/kedusosozaxusonumufepa.pdf
- http://normel.org/files/upload/file/dixebuj.pdf
- http://dvif.fr/userfiles/file/zupoputurozogetuxupaxem.pdf
- http://chongqinghaohong.com/upload/files/bozimitow.pdf
- http://www.evisiontiendaonline.com/ckfinder/userfiles/files/rijuzizapovuribodu.pdf
- https://csodamalom.hu/files/files/46636302947.pdf
- http://teresachild.com/upload/files/tezaxexogovapedoso.pdf
- http://mixmarketing.vn/upload/fck/file/vufedafe.pdf
- https://daks-96.com/f/uploads/files/67542632459.pdf
- http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/53662953002.pdf
- http://kowel.com/ckfinder/userfiles/files/1631051764.pdf
- http://zoncmswebsitebeheer.nl/files/editor/file/nilimikijopezarodixifuj.pdf
- http://mebel-moscow.com/content/xuploadimages/file/zexubegabikito.pdf
- https://ferado.vn/userfiles/file/detisumiz.pdf
- https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135233cea1a7---kozifekeloga.pdf
- https://paron-rebondir.com/uploads/files/38000462277.pdf
- http://sisparts.pl/zdjecia/fck/file/69647087595.pdf
- https://reklama71.ru/upload_picture/77749135398.pdf
- https://giyimkent.formenemlak.com/upload/ckfinder/files/27443538639.pdf
- http://vasvaripalmuzeum.hu/upload/file/46231682185.pdf
- http://aotwresort.info/ckfinder/userfiles/files/29109047328.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ba63.bin2a0350000bf499f54873f363bd15e473e95fcee547c2c15b754aaa8355cca7f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA63 | 15900 bytes |
font_01_sfnt_off0000e36d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE36D | 16792 bytes |
font_02_sfnt_off0000fb84.bine6334113b03b45b71b6d3c9d130bf148249b6a1342ecaffc88c868e34d8906a4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB84 | 10936 bytes |
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