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, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, many of which are on disposable hosting and utilize UTM parameters, suggesting a phishing or malware distribution campaign. The presence of embedded URLs further supports the attack pattern of luring users to external malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://krisoc.ru/uplcv?utm_term=physics+for+scientists+and+engineers+4th+edition+pdf PDF link annotation
- https://www.ftha.org/admin/ckfinder/userfiles/files/julofarozadusapo.pdfIn PDF document text
- https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/161435f8da002e---78950196497.pdfIn PDF document text
- http://buydecor.ru/uploads/files/tuzogutoton.pdfIn PDF document text
- http://kabaretyimpresariat.pl/Upload/file/segoninuvesusozefuselot.pdfIn PDF document text
- http://festacreativita.org/userfiles/file/kafam.pdfIn PDF document text
- https://gmnavarra.es/ckeditor/files/50032454560.pdfIn PDF document text
- https://a-pointpro.com/cms/ckfinder/userfiles/files/suxolerikulif.pdfIn PDF document text
- https://pakianco.ir/data/image/uploads/news/files/33365289411.pdfIn PDF document text
- http://artkulinaria.pl/sites/default/files/file/65322700937.pdfIn PDF document text
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/fk88df5htr42kr7ln0dnslu297/lovukewovuriwirataroz.pdfIn PDF document text
- https://illustrations.noche.fr/images/files/93918620896.pdfIn PDF document text
- http://smeeing.com/userfiles/files/18040993143.pdfIn PDF document text
- http://aias.pnu.ac.th/ckfinder/userfiles/files/6228048859.pdfIn PDF document text
- http://emilygrilltogo.com/uploads/files/61070634295.pdfIn PDF document text
- http://forepic.com/_UploadFile/Images/file/74898659394.pdfIn PDF document text
- http://uitetenindex.nl/images/uploads/nazowikaxebafapatimi.pdfIn PDF document text
- https://corpus.bg/files/fck/file/98780572496.pdfIn PDF document text
- https://stepweystudy.com/ckfinder/userfiles/files/wazegixataxazipabaxorak.pdfIn PDF document text
- http://fkjz.cn/upload/files/2021/09/202109031525058095.pdfIn PDF document text
- http://madinagirls.com/easydo%20v2.00/files/uploads/xuxamadukoduna.pdfIn PDF document text
- http://csc0516.com/userfiles/file/20210903045954_gsg7r1.pdfIn PDF document text
- http://architettoseneca.com/userfiles/files/13012953641.pdfIn PDF document text
- https://stiglic.sk/userfiles/file/nefagumimeden.pdfIn PDF document text
- http://obasekiestates.com/UserFiles/file/lejasubekatep.pdfIn PDF document text
- https://b2cdemo.tickets.com/content/files/77523415101.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_off0000ead1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAD1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000102e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102E8 | 11044 bytes |
SHA-256: 18c8a5b3bfb92e3f08b31cd9103f71fcd568787ff57e7de2779901b83105ae89 |
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font_02_sfnt_off00011c6e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C6E | 19304 bytes |
SHA-256: 524273a7efa6aa85e61981ad492b5bb21d7c694e6a0fc8e2ff9e86648d2e052b |
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