MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that form a link farm, with many pointing to compromised CMS uploads or disposable hosting, suggesting an attempt to obscure the final malicious destination. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. The primary attack pattern is likely spearphishing attachment, with the embedded links serving as a redirection mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 6
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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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://oniceh.ru/uplcv?utm_term=the+duff+kody+keplinger+pdf PDF link annotation
- https://linker.tw/files/jexetulalazatos.pdfIn PDF document text
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/3461edf204cbd030908bdce4a6a8dd29/19892962546.pdfIn PDF document text
- http://35ju.21tg.cn/uploadfile/ckeditor/files/bibijikuxukozitozav.pdfIn PDF document text
- http://indago-rovigo.it/userfiles/files/newevulede.pdfIn PDF document text
- http://pantipplaza.com/userfiles/file/dikudedutowem.pdfIn PDF document text
- https://braindevelopmentmaps.org/userfiles/files/12703398235.pdfIn PDF document text
- https://xn--hjrnskadeakademien-mtb.se/userfiles/file/24434982139.pdfIn PDF document text
- https://fishuntpesca.it/file/22909065219.pdfIn PDF document text
- https://kentacademymiango.com/userfiles/file/mafekosegojuz.pdfIn PDF document text
- https://livstyle.ro/home/livstyle/public_html/uploads/files/dijulutevav.pdfIn PDF document text
- https://valubil.com/public/uploads/cms_file/cms_files/sanukagewonejevoja.pdfIn PDF document text
- http://gerastar.com/userfiles/file/86565644587.pdfIn PDF document text
- http://thepnguyentran.com/media/ftp/file/fizekemafefabomitufimu.pdfIn PDF document text
- http://bige.vn/uploads/userfiles/file/77044749888.pdfIn PDF document text
- http://websurin.net/UserFiles/File/mumaf.pdfIn PDF document text
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161380943013ba---gimoxezipomedewafazekuvaz.pdfIn PDF document text
- https://yenhuy.vn/upload/files/tizujepasuwelimoxom.pdfIn PDF document text
- http://kondicionery-lobnya.ru/upload_picture/file/27554918139.pdfIn PDF document text
- http://saint-party.com/media/file/tigeraxenemume.pdfIn PDF document text
- http://kvarkeno56.ru/userfiles/file/vujazomesolek.pdfIn PDF document text
- https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/4f618ee7967e7636f4eb3b3a4e97e7e0/9529743661.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_off0000bf50.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF50 | 10616 bytes |
SHA-256: 17232d0deba06a3cd0ea2ad5ad64204df9e9df9cd072e8f9e88ea56f443ed8f2 |
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font_01_sfnt_off0000d73d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD73D | 17044 bytes |
SHA-256: b8a9260f196d2daf305b935476bfc9e6ce940004574023fd95381af23dd9d37a |
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font_02_sfnt_off0001035b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1035B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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