MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests it functions as a link farm, directing users to numerous external websites, likely for phishing or malware distribution. The presence of many embedded URLs supports this, with the primary one being https://synerhu.ru/uplcv. No scripts were extracted, but the overall structure and URL distribution point to a phishing or malicious redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9913
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://synerhu.ru/uplcv?utm_term=which+is+best+karate+or+taekwondo PDF link annotation
- https://keluargamimpi.com/contents/files/93527769165.pdfIn PDF document text
- http://naosgym.com/userfiles/files/13468972337.pdfIn PDF document text
- http://budapesticukraszdak.hu/userfiles/files/gugope.pdfIn PDF document text
- http://ateliergermain.org/sites/default/files/file/87714742688.pdfIn PDF document text
- http://studiogeologicotrilobite.com/userfiles/files/95642318465.pdfIn PDF document text
- https://perfecthospitals.org/ckfinder/userfiles/files/sidesajuxiduke.pdfIn PDF document text
- https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/deduvazemiroxoxexunofa.pdfIn PDF document text
- https://cliniquemyo.com/userfiles/file/puxarizodaresav.pdfIn PDF document text
- https://nomaquito-travel.com/editor-images/38866223819.pdfIn PDF document text
- http://marsalanoleggio.it/userfiles/files/vovulolinolosarevexapaz.pdfIn PDF document text
- http://nirmalamathachurch.org/cms_uploads/image/file/boguwaxomawomam.pdfIn PDF document text
- http://unsersohn.ch/images/file/19234756138.pdfIn PDF document text
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143326c4e92f---46713926120.pdfIn PDF document text
- https://mmagame.com/userfiles/file/85763878843.pdfIn PDF document text
- https://aarushimukhwas.idealviews.com/userfiles/files/zekex.pdfIn PDF document text
- https://yam-token.com/business_school/uploads/file/remafik.pdfIn PDF document text
- https://chaletsuenodesol.de/files/31767302941.pdfIn PDF document text
- https://petribax.com/userfiles/file/25972659505.pdfIn PDF document text
- http://www.pavimentosyreformasferlu.es/ckfinder/userfiles/files/sebolazadomumikofalinano.pdfIn PDF document text
- https://ecableapp.com/FCKeditor/FCKimgUpload/file/45755562470.pdfIn PDF document text
- https://ssmavidiyar.com/public/content-images/files/takidasuwesuzumakexam.pdfIn PDF document text
- http://worldtile.net/jangheung/userfiles/file/82292416947.pdfIn PDF document text
- http://badischer-kunstverein.de/ckfinder/userfiles/files/81202393946.pdfIn PDF document text
- http://familiegravesen.dk/userfiles/file/96404095445.pdfIn PDF document text
- https://ikincielinmak.com/upload/ckfinder/files/17881871873.pdfIn PDF document text
- http://mecateengenharia.com.br/ckfinder/userfiles/files/48615591542.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_off000101a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101A3 | 17116 bytes |
SHA-256: 490cfffd1d690eda0b390c69417a98e9c950f5231695a271263d79257f6909db |
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font_01_sfnt_off00012dd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12DD0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000145e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x145E7 | 10732 bytes |
SHA-256: de167a808a4a47a047f4de9effd191ba841cb0783c7f0d3b785f1f0be119e272 |
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