MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The presence of numerous external URIs, many pointing to disposable hosting and employing UTM parameters, strongly suggests a phishing or link-farming campaign. ClamAV detection and ML classification further confirm its malicious nature, likely as a phishing lure or a downloader for further stages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 6
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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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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=what+does+oem+unlock+do PDF link annotation
- http://spbmedax.ru/sites/default/files/uploads/33446256758.pdfIn PDF document text
- http://www.ambatownship.com/ckfinder/userfiles/files/sunuwivafakogogejag.pdfIn PDF document text
- https://mavachhaiphong.com/upload/files/lefipotemu.pdfIn PDF document text
- https://pacie.vn/web/uploads/files/miturojug.pdfIn PDF document text
- http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1614598e09714f---6014680559.pdfIn PDF document text
- http://bukharageorgia.com/sites/default/files/file/negeweworizobujajiligeguw.pdfIn PDF document text
- https://www.barefoothoa.com/webroot/js/ckfinder/userfiles/files/41002753142.pdfIn PDF document text
- http://dh-life.com/ckfinder/userfiles/files/48361902823.pdfIn PDF document text
- http://burelomdo.com/ckfinder/userfiles/files/62281474172.pdfIn PDF document text
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/879b2c63cb531a546c393936e5e64a09/52153114513.pdfIn PDF document text
- https://jyapa.com/jhuoyue/uploadfiles/79131382805.pdfIn PDF document text
- https://yucekalipmakina.com/tsrm1/img/userfiles/file/72310170241.pdfIn PDF document text
- http://philipsphotographystudio.com/40427730497.pdfIn PDF document text
- http://hawaiisushi.iorderfoods.com/uploads/files/gojamadobawox.pdfIn PDF document text
- https://congchunghadong.com/uploads/files/xifamaleniso.pdfIn PDF document text
- http://dmychadla.eu/UserFiles/File/famujumiratajodeluli.pdfIn PDF document text
- https://beyondpins.com/calisma2/files/uploads/79635454644.pdfIn PDF document text
- http://pinedafoundation.org/imageuploads/file/putowo.pdfIn PDF document text
- http://atel-j.nl/uploads/files/66329650116.pdfIn PDF document text
- https://officialbacknumber.com/editor_up/kawolulu.pdfIn PDF document text
- http://golfvillageonline.com/userfiles/file/degavosenejusapodusu.pdfIn PDF document text
- https://rainbowprinter.com/app/webroot/files/file/20488454847.pdfIn PDF document text
- http://shiokuda1.com/contents/files/nepuxilubuvarevari.pdfIn PDF document text
- http://cheumst.com/upload/fckeditor/file/34481780534.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_off0000d78d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD78D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000efa4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFA4 | 10628 bytes |
SHA-256: 950666a53f943585cdecaf098260820a21c27883268d7edb78d755034749c8ac |
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font_02_sfnt_off000107ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107CE | 19368 bytes |
SHA-256: 2e0fb4741b814c02705de3939dc8281e402c7c870a23662c26325a5778fe032a |
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