MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan. Heuristics indicate it contains numerous links to external websites, with many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9829
Heuristics 6
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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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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://opusincertum.it/userfiles/files/9400966687.pdf In PDF document text
- http://srilakshmienterprises.net/uploads/28230982192.pdfIn PDF document text
- https://ibshospitals.com/userfiles/file/pinebugufepavixowebo.pdfIn PDF document text
- http://achilleferolla.it/userfiles/files/wumafo.pdfIn PDF document text
- http://slkuang.com/v15/Upload/file/202191142383099.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133ae79513f9---vubobarijusexolusagutata.pdfIn PDF document text
- http://nebovsem.ru/app/webroot/files/files/63678043442.pdfIn PDF document text
- https://euroialinsol.ro/userfiles/file/giriwizonuvapepizopu.pdfIn PDF document text
- http://stmarysharipad.com/userfiles/file/wegawovini.pdfIn PDF document text
- http://autosoftware.company/autoresponders_images/files/84173913547.pdfIn PDF document text
- http://kalmi.ru/upfiles/files/27126048697.pdfIn PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/161410fe0815d6---39798535819.pdfIn PDF document text
- https://booburger.myagenda.cz/pictures/editor/files/najosadodavijoge.pdfIn PDF document text
- https://apsco.ly/userfiles/files/getokosixulelikurutigepi.pdfIn PDF document text
- http://yds-wcv.jp/free_images/files/43531223724.pdfIn PDF document text
- http://cocoabuterol.com/upload/files/bakajirurigu.pdfIn PDF document text
- https://smobiil.eu/userfiles/files/19192538872.pdfIn PDF document text
- http://mayingiabao.com/upload/files/kepufudew.pdfIn PDF document text
- https://helices-evra.com/userfiles/file/lixejaxusipi.pdfIn PDF document text
- http://rootbeadmill.com/upload_fck/file/2021-9-12/20210912114442523431.pdfIn PDF document text
- http://fundacionecla.org/resources/original/file/53845418140.pdfIn PDF document text
- http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/tojejunin.pdfIn PDF document text
- https://audit-advisers.com/userfiles/file/3112661648.pdfIn PDF document text
- https://highfieldhousehotel.net/nbloom/fckuploads/file/19848837471.pdfIn PDF document text
- http://mjengo.org/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/18040660287.pdfIn PDF document text
- https://angelsforwarriors.org/userfiles/files/83777815806.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+change+play+store+passwordPDF 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_off0000c91a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC91A | 18148 bytes |
SHA-256: a4cd701c8be9bd192078c800e343901e4a11e39d4986a484a3ec7b6ac603995b |
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font_01_sfnt_off0000f85a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF85A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011071.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11071 | 10892 bytes |
SHA-256: b2795146ae795880c861f29e7e2940b3694f786f779c54e7ca316df0493feee8 |
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