MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The presence of embedded JavaScript and a large number of external URIs, many of which appear to be link farms on disposable hosting, strongly suggests a phishing or malware distribution scheme. The primary purpose is likely to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://krisoc.ru/uplcv?utm_term=d7+dozer+military PDF link annotation
- http://dentalweek.eu/userfiles/files/27400868174.pdfIn PDF document text
- http://air-separation-supplier.com/d/files/midogikexevomilulixusu.pdfIn PDF document text
- http://mebelhotel.ru/userfiles/files/juwez.pdfIn PDF document text
- http://yuemeism.com/uploadfiles/files/tujuvizaxuzoja.pdfIn PDF document text
- http://podhoru.cz/userfiles/file/64729159645.pdfIn PDF document text
- http://cjmfgxfollow.morefriendship.com/upload/files/polatawixukuzefewajono.pdfIn PDF document text
- http://ngoinvest.com/uploads/ckfinder/files/desigebozotawowupugas.pdfIn PDF document text
- http://ibsdhc.hpds.work/ecdemo/web/js/ckfinder/files/files/95923490284.pdfIn PDF document text
- https://valleyrentals.com/userfiles/file/31686661992.pdfIn PDF document text
- http://phuongdonggolf.vn/app/webroot/uploads/files/97717928676.pdfIn PDF document text
- https://kham.vn/userfiles/file/ponexun.pdfIn PDF document text
- http://nadiadsa.org/userfiles/file/78969976396.pdfIn PDF document text
- https://siliconautomation.com/userfiles/file/nuketufekedaberudisopiv.pdfIn PDF document text
- http://life-worldwide.org/assets/uploads/files/14390552952.pdfIn PDF document text
- http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/73ee9ed07799513aa9ac55204ee06f26/rotubezululapirikopuza.pdfIn PDF document text
- https://vanphongphamhienluong.com/upload/files/nixufenamenubefovapade.pdfIn PDF document text
- https://4cmedica.com/ficheiros_upload/file/sisejukavudapodoregulexa.pdfIn PDF document text
- https://websbag.com/uploads/files/revosugopej.pdfIn PDF document text
- https://wonkingchina.com/d/files/xumopuf.pdfIn PDF document text
- http://radioevangilereal.com/assets/ckfinder/core/connector/php/uploads/files/jusijowifotuwagana.pdfIn PDF document text
- https://alemarferries.alemarsnp.gr/ckfinder/userfiles/files/61550719889.pdfIn PDF document text
- https://www.orthovision-lublin.pl/ckfinder/userfiles/files/bekukojutizajizurezariw.pdfIn PDF document text
- http://dlabiura.kbo.pl/ckfinder/userfiles/files/85824615800.pdfIn PDF document text
- http://bluebiz.kr/userData/board/file/38943519161.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_off0000ae51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE51 | 10360 bytes |
SHA-256: ebaa2311a5641da29ba5710f5719326c6783044e3a77f4d58e08b7174f1ae2ac |
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font_01_sfnt_off0000c5cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5CF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000dde1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDE1 | 14620 bytes |
SHA-256: 6d1b24b5ebf6e9363ce5393a88666fc79e6439ffd706e63666bffbbbc05a76a8 |
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