MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to PDF files on various domains, indicating a link farm or distribution network. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically identifies this pattern as a link farm on disposable hosting, suggesting a tactic to manipulate search engine results or distribute malware. No scripts were extracted, but the overall structure and heuristics point to a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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 http://interwork.sk/userfiles/file/4485828583.pdf In PDF document text
- http://www.gobarging.com/uploads/textareas/file/4491999721.pdfIn PDF document text
- http://czytamzezrozumieniem.pl/userfiles/file/71890009126.pdfIn PDF document text
- http://secohthailand.com/file_media/file_image/file/lawedaxalinumop.pdfIn PDF document text
- https://podiummagazinenews.com/ckfinder/userfiles/files/ronapewe.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613777912ddec---febilos.pdfIn PDF document text
- http://betonkeritesek.eu/Content/files/pavimopozuje.pdfIn PDF document text
- http://thanhcongtechtra.com/upload/files/fipamuvosaxegujes.pdfIn PDF document text
- http://chaodontuonglai.vn/uploads/ck_upload/files/sazasabuwefukusupazere.pdfIn PDF document text
- http://cmrivestimenti.com/userfiles/files/85422144471.pdfIn PDF document text
- http://aleshashop.net/uploaded_files/userfiles/files/jobukivugajawokanejibaxan.pdfIn PDF document text
- http://kcntanduc.vn/img_duhoc/files/4470765683.pdfIn PDF document text
- http://www.majbrno.cz/uploads/files/15709166873.pdfIn PDF document text
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/um3bovskfgcfh85ltefd5hd3rg/36325842790.pdfIn PDF document text
- https://lemarko.com/userfiles/file/kumavuke.pdfIn PDF document text
- https://selispin.com/calisma2/files/uploads/71785923886.pdfIn PDF document text
- https://visualmotion.nl/uploads/file/bakapitegifowutopimunabev.pdfIn PDF document text
- http://suyogmaratha.com/editorimages/file/nenejonokusudo.pdfIn PDF document text
- https://valubil.com/public/uploads/cms_file/cms_files/780268396.pdfIn PDF document text
- https://giverny-bkk.com/upload/files/62947849060.pdfIn PDF document text
- http://yule-sign.com/upload/editor/file/20210908195336.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=dragon+ball+z+goku%27s+next+journeyPDF 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_off0000dcc7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCC7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f4d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4D9 | 19232 bytes |
SHA-256: 51e18fdcf91525746ef194474229b49674935a7e044ebafd91f0c1f1c4d7471a |
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font_02_sfnt_off0001277d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1277D | 10964 bytes |
SHA-256: 9c27e1d1c75af6aac097c3975530a3c7227c679f03f46fdaeba3ea7e43ea7c23 |
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