MALICIOUS
142
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. The presence of numerous external URLs, many pointing to disposable hosting and employing UTM parameters, suggests a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to download and execute a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://infrive.ru/uplcv?utm_term=redecor+cheats+android PDF link annotation
- http://abwplazaview.com/uploads/files/legujezidifarufujozukovep.pdfIn PDF document text
- https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/tj01uimgu7sdlgotf35nra5pa3/65843522644.pdfIn PDF document text
- http://madveras.com/ckfinder/userfiles/files/sidafazivoti.pdfIn PDF document text
- http://praguynakorn.com/praguynakorn/picture/datapro/files/61728303718.pdfIn PDF document text
- http://thechelseaff.com/user_uploads/files/nopobonawofaxidum.pdfIn PDF document text
- http://covina.crazyrockinsushi.com/uploads/files/88546850502.pdfIn PDF document text
- http://fulepmark.hu/nyebu/fulepmark/userfiles/file/losogigem.pdfIn PDF document text
- https://xn--22ck6bdp5cach0mc23a.com/ckfinder/userfiles/files/17903995835.pdfIn PDF document text
- http://montex.pro/uploads/userfiles/file/dibexomivutubo.pdfIn PDF document text
- http://optometrystaprzemysl.pl/userfiles/file/lidubiwuvikabanipor.pdfIn PDF document text
- https://arendic.cl/files/24014687517.pdfIn PDF document text
- http://huthamcauquanggiap.com/upload/files/38097627203.pdfIn PDF document text
- http://xn--2e0b95unoa536adofm5h.com/userfiles/file/75193668631.pdfIn PDF document text
- http://hotstamping.pl/files/file/xomigevipopala.pdfIn PDF document text
- http://lovec.bg/root/ckfinder/userfiles/files/12457797271.pdfIn PDF document text
- http://sun-tes.ru/files/file/gojajirinam.pdfIn PDF document text
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f6b759c070---48299967660.pdfIn PDF document text
- http://www.gieskestukadoors.nl/ckfinder/files/files/pibikukuvapuzolifud.pdfIn PDF document text
- http://www.martiusstaden.org.br/js/ckfinder/userfiles/files/vurepukudirijokesa.pdfIn PDF document text
- http://anhbanglaw.com/userfiles/file/76829444653.pdfIn PDF document text
- https://postelezmasivu-olomouc.cz/ckfinder/userfiles/files/tikilabigodotulepob.pdfIn PDF document text
- http://detskaoptika.cz/ckfinder/userfiles/files/91408085088.pdfIn PDF document text
- https://studybrilliant.online/app/webroot/img/userfiles/file/fodagofadevi.pdfIn PDF document text
- https://eatorhours.org/e-bussiness/fckimages/file/vikazuzitoxo.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_off0000da55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA55 | 18248 bytes |
SHA-256: 0a61bb62fd8011ee375e37cf74decd78fbcf69b02e3482a1e8f72710ea53d59f |
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font_01_sfnt_off00010a27.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A27 | 10468 bytes |
SHA-256: 37993b1891ca6b9915364bff93c4d6f862403263ef8a5c07249695a10bf032a2 |
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font_02_sfnt_off000121dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121DC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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