MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to various PDF files hosted on disposable domains, suggesting a link farm designed to distribute malware. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a deliberate attempt to create a large number of links on low-reputation hosting, likely for SEO poisoning or to obscure the true malicious destination.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://verypool.cn/images/upload/File/88876278142.pdf In PDF document text
- https://www.loscam.com/lib_common/ckeditor/ckfinder/userfiles/files/92926838688.pdfIn PDF document text
- http://woodbridgeabw.com/uploads/files/86915464750.pdfIn PDF document text
- http://elpijisystem.com/file/jitorowofubononosemeg.pdfIn PDF document text
- http://sabaparsian.com/ckeditor/files/files/76914430505.pdfIn PDF document text
- https://detskeihriska.eu/ckfinder/userfiles/files/76187231988.pdfIn PDF document text
- https://solener.info/ckfinder/userfiles/files/74683095471.pdfIn PDF document text
- http://chinhsuasolieu.com/media/files/nobetewiparane.pdfIn PDF document text
- https://annekienlen.fr/imagesfile/55802041972.pdfIn PDF document text
- https://legend-chang.com/UserFiles/files/45725437750.pdfIn PDF document text
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136a67a291d7---91625807662.pdfIn PDF document text
- http://sosonomo.com/ckfinder/userfiles/files/30985232442.pdfIn PDF document text
- http://gachbinhduong.com/upload/file/ribifafojasewunezefajutut.pdfIn PDF document text
- http://ceraunavoltapizzeria.it/userfiles/files/ravononopogagi.pdfIn PDF document text
- http://tpdw.pl/userfiles/file/68449408312.pdfIn PDF document text
- https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614048fa22724---vekopinaje.pdfIn PDF document text
- http://alpha-cp.com/userfiles/file/16354675070.pdfIn PDF document text
- https://sme.bankai.lv/ckfinder/userfiles/files/savisuzaporijusepu.pdfIn PDF document text
- http://gruppocaminiti.it/userfiles/files/xejudukalotobiwi.pdfIn PDF document text
- http://ros-grad.ru/fck_editor_files/files/dibabofafirefaxit.pdfIn PDF document text
- http://manpukulivermore.com/uploads/files/35781027848.pdfIn PDF document text
- https://sdhouse.info/ckfinder/userfiles/files/bozevudutedagar.pdfIn PDF document text
- https://www.bakkersvlaanderen.be/resources/plugins/ckfinder/userfiles/0/files/wagajowufefede.pdfIn PDF document text
- http://polyalpan.hu/_user/file/46359840609.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=download+wwe+2k18+for+android+ppssppPDF 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_off0000b0b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0B1 | 15872 bytes |
SHA-256: ba24a824b3f6fc50ba62e5e503bfe807c0b4e2f2e4925b031258ad533f33f1ce |
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font_01_sfnt_off0000d93c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD93C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f153.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF153 | 10952 bytes |
SHA-256: d9a706639d71282e9d9fcc5aeae1c02e1b0084932dd1f8d2df3f376c207c1819 |
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