MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF sample was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. The presence of numerous distinct URLs, many pointing to disposable hosting and configured as a link farm, strongly suggests a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://silverk.ru/img/lib/file/letesad.pdf In PDF document text
- https://beyondpins.com/calisma2/files/uploads/26467035671.pdfIn PDF document text
- https://rgcsmt.org/ckfinder/userfiles/files/36489711731.pdfIn PDF document text
- https://reformedgeneration.com/userfiles/file/balelelukuj.pdfIn PDF document text
- http://lahma.pl/_u/userfiles/file/55454586628.pdfIn PDF document text
- https://bellcera.60km.com/upload/files/jokuwapiletiroxuj.pdfIn PDF document text
- http://hacoauto.vn/upload/files/48552137229.pdfIn PDF document text
- http://shbaicun.com/userfiles/file/2021091010372873499.pdfIn PDF document text
- http://www.siscbolivia.com/admin/uploaded/fck/file/jinuvowepexakexeke.pdfIn PDF document text
- https://sunnyvale.com/wysiwygfiles/file/fudiwotomapuwerexekuri.pdfIn PDF document text
- http://espokebar.com/uploads/files/fufezofota.pdfIn PDF document text
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16143f3bbb2543---rinefatilabulivulaka.pdfIn PDF document text
- http://fu-xin.tw/uploads/files/202109160258356125.pdfIn PDF document text
- http://thewesternmist.com/userfiles/file/rirolusotafipiral.pdfIn PDF document text
- https://szaniterplaza.hu/ckfinder/userfiles/files/73989999275.pdfIn PDF document text
- https://briljant-maleri.se/UserFiles/files/60487206194.pdfIn PDF document text
- http://skontrolsengineering.com/file_media/file_image/file/vinufug.pdfIn PDF document text
- http://techsystem.gr/data/uploads/ckeditor/files/wapozitebumokodiwekelozif.pdfIn PDF document text
- https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612efefc115d8---42989164665.pdfIn PDF document text
- http://markjfox.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/37395381544.pdfIn PDF document text
- http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/xurakomapoda.pdfIn PDF document text
- https://wintechindia.in/ckfinder/userfiles/files/22345622602.pdfIn PDF document text
- http://heibldr.hu/FCKfeltoltott/file/39646299265.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=skate+it+ds+romPDF 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_off0000b958.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB958 | 16788 bytes |
SHA-256: 0c0f238378418abbb032a4f2d9853534baef4f44aa2bfa8f83ebfd0473d75ef3 |
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font_01_sfnt_off0000e449.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE449 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fc60.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC60 | 10424 bytes |
SHA-256: 3247fe9575bfda3e7d4d09fdf842148c70965ed93369de56ac67595aa9358cc4 |
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