MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous external URIs and is described as a link farm, indicating an attempt to redirect users to potentially harmful websites. The presence of embedded URLs and the nature of the heuristics suggest a phishing or malware distribution scheme.
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://infrive.ru/uplcv?utm_term=best+step+counting+app+for+android PDF link annotation
- http://apartamentykunickiego.pl/architekci/public/upload/ckfinder/userfiles/files/pimovirexed.pdfIn PDF document text
- https://congthuonghotel.vn/app/webroot/files/images/pages/files/56770634804.pdfIn PDF document text
- http://bpabv.nl/uploadfiles/file/lapibubozofi.pdfIn PDF document text
- http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16143f86683752---ralebodapisadevizevevi.pdfIn PDF document text
- http://medianet2000.net/amm_prod/image_news_popup/file/fabovimofasojijazukigabu.pdfIn PDF document text
- http://climtech.com/files/files/madubufe.pdfIn PDF document text
- https://optical-axis.com/uploads/files/202109121151407977.pdfIn PDF document text
- https://aristi-trap.com/upload/users/files/kutodozidemuxawumusugis.pdfIn PDF document text
- https://hotelcorona.ro/files/wegofulifivo.pdfIn PDF document text
- http://synergyproperty.com/images/files/jadufeliketixovobewari.pdfIn PDF document text
- http://terminsk.by/pics/files/28822230644.pdfIn PDF document text
- https://smartcirclegroup.com/userfiles/file/nutodelopeji.pdfIn PDF document text
- https://namhunglogistic.vn/site/files/15711154092.pdfIn PDF document text
- http://simonkuehner.de/gfx/userfiles/files/46694804069.pdfIn PDF document text
- http://maroba-zirndorf.de/file/32470073395.pdfIn PDF document text
- http://haiqi-machine.com/d/files/gojud.pdfIn PDF document text
- https://websbag.com/uploads/files/98768012698.pdfIn PDF document text
- http://ramenhajimetustin.com/uploads/files/67384667318.pdfIn PDF document text
- http://okeefesreef.com/ckfinder/userfiles/files/51049145748.pdfIn PDF document text
- https://crossfitbeeshark.ro/app/webroot/files/userfiles/files/lenudare.pdfIn PDF document text
- https://titishop.co/upload/files/25157400397.pdfIn PDF document text
- http://hzyixiangchem.com/upload/files/27411263907.pdfIn PDF document text
- https://thokhoavietnam.com/upload/files/rotufugapunemibokuf.pdfIn PDF document text
- http://sro52.ru/uploads/files/33210946489.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_off0000dc29.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC29 | 10900 bytes |
SHA-256: 4e22f584003e1376e9661f0c8a4146685c20cd18e397cfa5347fd23895497f0a |
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font_01_sfnt_off0000f55d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF55D | 17900 bytes |
SHA-256: e68a27ead51951361da8c763c5b6148e20b10cd052a20122aa1651e6e986bfb6 |
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font_02_sfnt_off000123d6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123D6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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