MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan variant. It contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, indicating a strong intent to redirect users to potentially harmful content. The document body is heavily obfuscated, but the presence of external URIs and the link farm heuristic strongly suggest a phishing or malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 5
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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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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=square+root+of+13+simplified PDF link annotation
- http://www.eurosecurimed.com/ckfinder/userfiles/files/63651691898.pdfIn PDF document text
- http://sameiroeventos.pt/ficheiros/14287045146.pdfIn PDF document text
- http://sriraghavendratemple.com/ckfinder/userfiles/files/36081334555.pdfIn PDF document text
- https://valve-toho.com/userfiles/file/58488913400.pdfIn PDF document text
- http://xn--80ahcjevtqq.xn--p1ai/ckfinder/userfiles/files/vufanuwofilipof.pdfIn PDF document text
- https://stmarys-perthamboy.com/upload/File/11473174433.pdfIn PDF document text
- http://villabrown.it/userfiles/files/29220547453.pdfIn PDF document text
- http://artwatch.ru/userfiles/file/95044369855.pdfIn PDF document text
- https://condicionamentofisico.com/arquivos/file/riranulela.pdfIn PDF document text
- http://slesnick.net/userfiles/files/13744603579.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee7b04561e---76033439403.pdfIn PDF document text
- https://rotitelor.com/contents/files/buwufajepokubesixegovewuw.pdfIn PDF document text
- http://dental-forum.ru/userfiles/file/resonabemuxajol.pdfIn PDF document text
- https://ymy-tea.tw/upload/files/fujuxuwemamosew.pdfIn PDF document text
- http://boothbayharborshipyard.com/userfiles/file/74044422626.pdfIn PDF document text
- http://virtualcharityevents.com/vce_cake/files/files/96821962245.pdfIn PDF document text
- https://dentalrud.com/userfiles/file/mosunetisofizusopawum.pdfIn PDF document text
- http://www.facyt.com.ar/ckfinder/userfiles/files/faguga.pdfIn PDF document text
- http://xn----itbbfrdrdbd4bgy6gi.xn--p1ai/webroot/files/files/vifafezojojoluwi.pdfIn PDF document text
- http://aygroupmuh.com/image/files/96708888922.pdfIn PDF document text
- http://pomodorolennep.de/gfx/userfiles/files/32714844357.pdfIn PDF document text
- http://sukhonthip.com/file_media/file_image/file/rijewajavebajuzunig.pdfIn PDF document text
- https://rm-parketi.si/uploads/58754970528.pdfIn PDF document text
- http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f6540e9223---15039419892.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_off0000bcd4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBCD4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d4eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4EB | 11100 bytes |
SHA-256: 0272385e03064ac1d5342827bbc396bc198aab0ae8a6a3acb2179f4c240a3c5b |
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font_02_sfnt_off0000eeab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEAB | 17944 bytes |
SHA-256: 32e18fd996c8923e8263616fac7383d65f31e6621a098fd427fe3429dd079f81 |
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