MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The presence of embedded JavaScript and numerous external URIs, including one pointing to a link farm on disposable hosting, suggests this PDF is designed to redirect users to malicious sites. The primary external URI, https://inwebjor.ru/uplcv, appears to be a redirector, likely serving as part of a phishing or malware distribution chain.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://inwebjor.ru/uplcv?utm_term=harry+potter+full+movies+free+streaming PDF link annotation
- http://aatmicscience.org/asuserfiles/file/supex.pdfIn PDF document text
- http://tscyw.net/userfiles/file/20210917090304_vppwln.pdfIn PDF document text
- http://www.mmd.ntou.edu.tw/ckfinder/userfiles/files/44463501502.pdfIn PDF document text
- http://manvilastrust-org.bvirani.com/ckfinder/userfiles/files/fodamike.pdfIn PDF document text
- https://bearings.vn/images/ckeditor/files/lixonaleno.pdfIn PDF document text
- https://papiratisk.cz/soubory/magatiwigamado.pdfIn PDF document text
- http://cukiernia-waltar.pl/qcms/userfiles/file/61683413963.pdfIn PDF document text
- http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/borutikolekodovimiju.pdfIn PDF document text
- https://cvssteelex.com/ckfinder/userfiles/files/17380481526.pdfIn PDF document text
- http://rts-3.ru/upload/files/loboteba.pdfIn PDF document text
- http://levotst.com/uploads/files/fenobarujuxer.pdfIn PDF document text
- http://wellfoto.cz/pictures/files/51637946405.pdfIn PDF document text
- http://ucg-eg.com/userfiles/file/20669937345.pdfIn PDF document text
- https://aspirecambodia-edu.org/userfiles/file/diwadikijowotivumamub.pdfIn PDF document text
- https://mayersoffice.com/userfiles/file/81889853180.pdfIn PDF document text
- http://anhuishangbiao.com/upload_fck/file/2021-9-4/20210904221335743664.pdfIn PDF document text
- http://beachfirebrands.com/userfiles/file/zawovetim.pdfIn PDF document text
- http://www.nbc.com.vn/ckfinder/userfiles/files/voxozasobejakenojujat.pdfIn PDF document text
- https://swalaya.in/userfiles/file/topafikekovusimurarovepip.pdfIn PDF document text
- https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/sfi9acg32r0jn3g8kr84tjftgm/kowirenowerixerafamiwokeb.pdfIn PDF document text
- https://rugsdirect4u.com/uploadedfiles/file/49614313558.pdfIn PDF document text
- http://philipp-haberland.de/images/upload/file/sagulewo.pdfIn PDF document text
- http://www.vlaamspatientenplatform.be/_plugin/ckfinder/userfiles/files/kabegofubusawobovojewizo.pdfIn PDF document text
- http://bellina.pl/userfiles/file/mezepi.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_off0000b164.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB164 | 10972 bytes |
SHA-256: d01cd62a061622b00af5fff9d1c665f09586ba35a1a5bad6a9b57fa23102835b |
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font_01_sfnt_off0000cadc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCADC | 15116 bytes |
SHA-256: 20868861f7268eca160727331445d8cb0299902618b7c55e6d5a176dc57968a1 |
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font_02_sfnt_off0000f0db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0DB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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