MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of numerous external URIs, many of which are linked to disposable hosting and employ UTM parameters, suggests a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the idea that the PDF acts as a lure to external resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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=minecraft+free+mod+apk+download PDF link annotation
- http://drentmedischadvies.nl/uploads/files/37831719299.pdfIn PDF document text
- http://ore-processing.ru/d/files/48302265681.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/zififanebona.pdfIn PDF document text
- http://kmbb.at/userfiles/file/47045489136.pdfIn PDF document text
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/5846u00kv1h2ev81kks83gioh3/85159194583.pdfIn PDF document text
- http://www.serenissimaservizi.com/files/14797496663.pdfIn PDF document text
- http://www.ssc-ras.ru/ckfinder/userfiles/files/poropakepekulogazesax.pdfIn PDF document text
- https://sledovani2.gpshlidac.cz/www/userfiles/files/jubukamisidubisebaperisep.pdfIn PDF document text
- http://cherryontop.pl/upload/fotki/file/50121127172.pdfIn PDF document text
- https://mayxaydunghoangphuc.com/userfiles/files/tutozapurula.pdfIn PDF document text
- http://lapmaymn.samdigroup.vn/app/webroot/upload/files/lidewetopikixuluwefovazal.pdfIn PDF document text
- http://s13cf5ef.alojamientovirtual.com/ropadefutbolbarata/userfiles/file/13678036431.pdfIn PDF document text
- http://redemaisfarma.com/userfiles/file/zitifevebarita.pdfIn PDF document text
- http://mamaskitchenorder.com/uploads/files/95484812639.pdfIn PDF document text
- https://khoahoc.timviec365.com/picturesfiles/tulokasuwenir.pdfIn PDF document text
- http://gndpta.eu/news_objects/files/59161902887.pdfIn PDF document text
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161342a420de3a---28160785859.pdfIn PDF document text
- http://japanbizkorea.com/userData/ebizro_board/file/vazozaduletofokebazide.pdfIn PDF document text
- https://www.serwkom.pl/plugins/ckfinder/userfiles/files/xubeduzuwibija.pdfIn PDF document text
- https://grandiosieventinuziali.it/filesUploads/file/dipobobiliwo.pdfIn PDF document text
- http://podhoru.cz/userfiles/file/duxumavon.pdfIn PDF document text
- http://avtosfera28.ru/userfiles/file/31882115058.pdfIn PDF document text
- https://rougezenekar.hu/files/file/garutogogudelijevof.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_off0000ca18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA18 | 16268 bytes |
SHA-256: 0107f74648dcee1a2acb98de5cb1d02f03f78fec20845ea38b45e4ef795cf923 |
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font_01_sfnt_off0000f3b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3B1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010bc8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BC8 | 10784 bytes |
SHA-256: ddd44f3307219e903aa3c322f4b5990f21914b9fb50f7afbc9756dbd6f110a8e |
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