MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious content. The presence of numerous external URIs, many hosted on potentially disposable domains and configured with UTM parameters, suggests a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure points to a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 http://hypotekaprezamestnancov.sk/res/file/42348756877.pdf In PDF document text
- https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/12317942793.pdfIn PDF document text
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/44o51tkg0tfp6dt7nch6r56na5/68625220803.pdfIn PDF document text
- https://knurussian.kr/DATA/upload/files/202109202019492466.pdfIn PDF document text
- http://bburago.info/admin/fckeditor/userfiles/file/99566523016.pdfIn PDF document text
- http://giaydantuongphongkhach.net/images/news/file/penimajuworedeluporonax.pdfIn PDF document text
- http://lionsmarsala.it/userfiles/files/95891092314.pdfIn PDF document text
- http://nj-rshb.com/v15/Upload/file/20219267921844.pdfIn PDF document text
- https://kaowei.tw/image/files/20210903_075332.pdfIn PDF document text
- http://impactpluslearning.com/ckfinder/userfiles/files/43667654044.pdfIn PDF document text
- http://www.sas.edu.mn/ckfinder/userfiles/files/99023390515.pdfIn PDF document text
- http://strap.sk/uploads/files/5688206523.pdfIn PDF document text
- https://dhesient.com/media/busudabaxo.pdfIn PDF document text
- https://komunalno-vrgorac.hr/files/32749423948.pdfIn PDF document text
- http://0575zl.com/userfiles/file/77551777041.pdfIn PDF document text
- http://mmbc.cz/_data/user_files/file/16017109808.pdfIn PDF document text
- http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/94951778202.pdfIn PDF document text
- http://dienhoabacninh.vn/webroot/img/files/39956573514.pdfIn PDF document text
- http://zatexpress.com/upload/userfiles/files/teviparovilunavate.pdfIn PDF document text
- http://identik.hu/editor_up/84121209243.pdfIn PDF document text
- https://derechosenred.org/aym_image/files/tufazovoj.pdfIn PDF document text
- http://spiregene.com/image/files/20210927_021517.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=thoptv+app+download+for+appPDF link annotation
- 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_off0000ae45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE45 | 10316 bytes |
SHA-256: 7cd1156057a7cc746c9600cc512c1f42a8b97377278ffe7aabf7911d502d4328 |
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font_01_sfnt_off0000c57a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC57A | 17140 bytes |
SHA-256: ec2fe699e9c0ad9f72f8ab62b95848f649fd523c76383d407b1b063334ebc951 |
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font_02_sfnt_off0000f154.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF154 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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