MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and numerous external URLs, many of which are part of a link farm, indicating a malicious intent to redirect users to potentially harmful content. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a lure for phishing or malware distribution. The presence of embedded JavaScript points to its use in exploiting vulnerabilities or executing malicious code.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://cructi.ru/uplcv?utm_term=monster+legends+unlimited+everything+apk PDF link annotation
- http://tavio.su/files/file/69874399147.pdfIn PDF document text
- http://xn--80aap0abfiql8h.xn--p1ai/admin/ckfinder/userfiles/files/16640482327.pdfIn PDF document text
- http://olgapolyakova.com/files/files/furasokavawexovo.pdfIn PDF document text
- https://markaoyun.com/calisma2/files/uploads/palagazos.pdfIn PDF document text
- http://vce34.ru/attachments/file/43560172917.pdfIn PDF document text
- http://wmc21.com/ckupload/files/gugitewavilatetu.pdfIn PDF document text
- http://www.hro.ait.ac.th/js/ckfinder/userfiles/files/xuxekabakudukorelodaxaza.pdfIn PDF document text
- http://jingluo.net/uploadfiles/files/63467336548.pdfIn PDF document text
- https://myclubowners.com/userfiles/files/zuvimudoduwumef.pdfIn PDF document text
- https://kimcert.com/E/file/21542895561.pdfIn PDF document text
- http://mikailang.net/userfiles/file/20210918193846_1462902374.pdfIn PDF document text
- https://giritrademark.com/content_files/files/fesubiforupumojufasat.pdfIn PDF document text
- https://portofcrotone.com/dati/upload/file/rokebulub.pdfIn PDF document text
- https://tutorsbureau.net/userfiles/file/lopamalejoz.pdfIn PDF document text
- http://ohsongpharm.com/ckfinder/userfiles/files/kipaxijivul.pdfIn PDF document text
- http://jd6618.com/jd6618/file/2021-9/file/LwpCms2021_09_07_18_59_36_3706.pdfIn PDF document text
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138aaa98cf04---9947351441.pdfIn PDF document text
- https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/78232463848.pdfIn PDF document text
- http://aranysolyomfeszke.hu/editor_up/35584641979.pdfIn PDF document text
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16144b4761422c---bimokub.pdfIn PDF document text
- http://app0.linkeo.it/ckfinder/userfiles/files/97072339002.pdfIn PDF document text
- http://em-mould.com/ckfinder/userfiles/files/donegoxa.pdfIn PDF document text
- https://jewfri.kr/files/image/files/44335948599.pdfIn PDF document text
- http://ridendo.cz/files/file/2118814466.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_off0000dc2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC2C | 11204 bytes |
SHA-256: a61beaf6ec63774d3d4e13e385540e66e6fa1feb3c84feeb544f9abe6d2c1c7a |
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font_01_sfnt_off0000f608.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF608 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010e1a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E1A | 17888 bytes |
SHA-256: 1ff9aec87b58ef2a5767662fe6d026dec04f6e48881dc1d3571b69d2a5838ec6 |
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