MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous external URLs were extracted, suggesting the PDF acts as a lure to redirect users to potentially harmful websites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating a pattern of using disposable hosting for link farms.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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=truecaller+red+call+symbol PDF link annotation
- http://motolargo.pl/userfiles/file/72941904620.pdfIn PDF document text
- http://www.saaegfpolis.org.br/ckfinder/userfiles/files/vakemevezozogev.pdfIn PDF document text
- http://sqc.jp/user_data/editor/ckfinder/core/connector/php/upload/files/13996363615.pdfIn PDF document text
- http://german-ex.com/images/blog/file/fugigekolutoxejejoso.pdfIn PDF document text
- https://llibreriaha.com/img/events/file/kuxuzipiri.pdfIn PDF document text
- https://www.pactforfamilies.org/ckfinder/userfiles/files/lidevefukamu.pdfIn PDF document text
- http://niszczeniewaw.pl/userfiles/file/7263569704.pdfIn PDF document text
- http://vytvarnyobchod.cz/UserFiles/File/11716421966.pdfIn PDF document text
- https://styliststudios.com/imagesTE/file/terexinejuwanusa.pdfIn PDF document text
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145cf4c346a9---2284336101.pdfIn PDF document text
- http://villacappuccina.com/userfiles/files/xikijagudareramebekize.pdfIn PDF document text
- http://hrzservices.com/uploadfiles/file/voxarowipudalaruxi.pdfIn PDF document text
- https://nangluongvada.com/uploads/files/zuwidazura.pdfIn PDF document text
- http://kingbikeonline.com/images/upload/File/zedazazuwomemorus.pdfIn PDF document text
- http://gordostcrista.ru/userfiles/file/tawawemexiberubomezozus.pdfIn PDF document text
- https://evpersoneli.net/ev-personeli/file/76395458197.pdfIn PDF document text
- https://gentrilieu.vn/userfiles/file/55484875761.pdfIn PDF document text
- https://rugsinc.in/UserFiles/files/36956893961.pdfIn PDF document text
- http://gerd-pollak.de/userfiles/file/kuzefufadizivilejijet.pdfIn PDF document text
- http://orbitsecurity.qa/pro_mvp_tech/uploads/file/75174449787.pdfIn PDF document text
- https://fablab808.com/nbloom/fckuploads/file/sajevivijonorivoke.pdfIn PDF document text
- http://www.aportecnica.com/imagenes/editor/file/5009997509.pdfIn PDF document text
- http://koryosushi.com/uploads/files/ropux.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_off0000d693.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD693 | 17884 bytes |
SHA-256: 0e18ead4b6fab3ce6e41219f8d919f6eb0c1099c4570cb55fff65c98bec69c88 |
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font_01_sfnt_off0001043e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1043E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011c55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C55 | 10552 bytes |
SHA-256: 3d49844ae00325df0aa16b15195b875e0c55ed1e1742f8d2553ef960272ac219 |
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