MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM specifically points to a non-clustered link farm on disposable hosting, reinforcing the phishing or malware lure aspect.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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://synerhu.ru/uplcv?utm_term=b+se+word PDF link annotation
- http://www.autoservis-hubatka.cz/admin/upload/ww/file/34377686313.pdfIn PDF document text
- https://eledigitalpr.it/allegati/file/45125449971.pdfIn PDF document text
- http://z500.si/files/gedav.pdfIn PDF document text
- http://budaors.varosom.hu/userfiles/files/pokizunajugukalonanagij.pdfIn PDF document text
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613195783a3e7---73221055884.pdfIn PDF document text
- http://khodahoanglang.com/admin/webroot/upload/image/files/326481761.pdfIn PDF document text
- http://www.anapharmata.hu/ckfinder/core/connector/php/files/43531408006.pdfIn PDF document text
- https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/r0iahfcgrdgcri0ffbr7jhtfci/muvimalajufax.pdfIn PDF document text
- https://nhaccugiare24h.com/uploads/userfiles/file/92962364993.pdfIn PDF document text
- https://littleitalypizzany.com/nbloom/fckuploads/file/83009652737.pdfIn PDF document text
- http://asupuro.com/upload/save_image/files/66102553148.pdfIn PDF document text
- http://udelimpa.es/ckfinder/userfiles/files/19447462035.pdfIn PDF document text
- http://career-id.org/ckfinder/userfiles/files/wawekegagiso.pdfIn PDF document text
- https://chulintemple.house-well.com/CKEdit/upload/files/65836067969.pdfIn PDF document text
- http://chaodontuonglai.vn/uploads/ck_upload/files/69708583750.pdfIn PDF document text
- http://energywork.pl/userfiles/file/6114238726.pdfIn PDF document text
- http://www.teeintact.com/admin/fckeditor/editor/filemanager/connectors/php/img/file/81554708959.pdfIn PDF document text
- https://patriciogaete.com/upload/file/5814148445.pdfIn PDF document text
- http://studiotecnicomaglio.it/userfiles/files/65537828127.pdfIn PDF document text
- https://vnjhanoi.com/upload/files/54571443685.pdfIn PDF document text
- http://kayapalinakliyat.net/file/zikow.pdfIn PDF document text
- https://s-serviss.lv/userfiles/file/naxamapeletupijadadamaxef.pdfIn PDF document text
- https://tauthuy.vn/upload/files/97040850871.pdfIn PDF document text
- http://aromamahabaleshwar.com/ckfinder/userfiles/files/99248670841.pdfIn PDF document text
- http://faurau.com/luodan/images/userfiles/file/favuvetetujir.pdfIn PDF document text
- http://ducthanhtam.com/uploads/userfiles/file/vosusotipevuz.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_off0000da13.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA13 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f225.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF225 | 17020 bytes |
SHA-256: a77a756dd53440e3c40d56496981baf783527c4c811abbef138a74aa72f2cef9 |
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font_02_sfnt_off00011e50.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E50 | 9876 bytes |
SHA-256: 709b1515f7c3bd93c0621a045285fd4d7ec3de26f1fd7b770511f8474cbe1fa8 |
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