MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, with at least one identified as a malicious redirector. The document body includes text related to 'Data structures schaum series karumanchi pdf' and other seemingly unrelated content, suggesting a lure to trick users into clicking malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://wastran.ru/uplcv?utm_term=data+structures+schaum+series+karumanchi+pdf In PDF document text
- https://ladachess.ru/userfiles/file/84718661628.pdfIn PDF document text
- https://self-storage.sg/images/uploadedimages/file/zanasidimiw.pdfIn PDF document text
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/t5muaqci7qlasmcchfmek3etu2/94635444072.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614b70353fa3c---gapexibixesaxagolozak.pdfIn PDF document text
- http://www.reeder.ee/files/filemanager/52684160605.pdfIn PDF document text
- https://nazragame.com/calisma2/files/uploads/rabos.pdfIn PDF document text
- http://canphantich.net/Images_upload/files/luvevujubiz.pdfIn PDF document text
- http://ncfc.com.tr/ckfinder/userfiles/files/7061078971.pdfIn PDF document text
- http://gesundimjob.at/images/content/files/31415922807.pdfIn PDF document text
- http://skupka23.ru/upload/m/3600713435.pdfIn PDF document text
- http://leeharringtonhomes.com/userfiles/file/rifizu.pdfIn PDF document text
- https://tidurmalam2.com/contents/files/34481811849.pdfIn PDF document text
- http://talleresjpg.es/img/file/97453540025.pdfIn PDF document text
- http://dogwarts.ru/sites/default/files/file/kipavetemenejojumiw.pdfIn PDF document text
- https://qfuse.it/images/uploaded_files/ckfinder/files/1632779281_35491bc01c.pdfIn PDF document text
- http://forglass.sk/userfiles/file/90694218932.pdfIn PDF document text
- http://elandtour.com/FileData/ckfinder/files/20210915_1F0CD51E53549B4E.pdfIn PDF document text
- http://www.madiran-cruduparadis.fr/ckfinder/userfiles/files/duvexemalebabisigizumiw.pdfIn PDF document text
- http://raffaelecavazzoni.com/userfiles/files/dibarexalosazus.pdfIn PDF document text
- https://sarvodayasamaj.uk/upload/files/jofuv.pdfIn PDF document text
- http://robvancampen.nl/userfiles/file/48755760651.pdfIn PDF document text
- http://skolicka.eu/foto/images/file/zisesojederotuz.pdfIn PDF document text
- http://asacnfservices.com/ckfinder/userfiles/files/kiwef.pdfIn PDF document text
- https://www.dgaspcsm.ro/ckfinder/userfiles/files/75258254706.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 extracted file (font_00_sfnt_off0000b74e.bin)
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b74e.bin)
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b74e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB74E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cf60.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF60 | 18084 bytes |
SHA-256: 15480813ac2b39e98b4774b0f30cd9c5ff14936e8b96ae4adc52ef48dc103203 |
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font_02_sfnt_off0000fe4a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE4A | 10912 bytes |
SHA-256: 342d989833896d97f1cab440e689606809c0f5a467f5bceb98bce81677e9ea57 |
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