MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external URIs and is flagged as a link farm, suggesting it is designed to redirect users to malicious sites. The presence of embedded JavaScript and a high ML classifier score further indicate malicious intent, likely for phishing or malware delivery. The ClamAV detection confirms its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
Heuristics 8
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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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://inwebjor.ru/uplcv?utm_term=mcn+policy+and+procedure+manual
- https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/18lsiuf1g04mh2a1acp9aif4cl/18846566152.pdf
- https://salvatoredivilio.it/userfiles/file/visitetadakijozutiwopefu.pdf
- https://777mto.org/contents//files/rarixemidug.pdf
- https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0433370665---damupemonuwezejixekosota.pdf
- https://peiitw.com/Upload/ckeditor/files/niwef.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082494a0adbe---19604225950.pdf
- http://classiccar-jp.com/js/upload/files/9283136108.pdf
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/db7e94dfcc9d0e724f084f3a74b9880d/76026732986.pdf
- https://rybczewice.pl/userfiles/file/19262956038.pdf
- https://www.carrentchiengmai.com/files/76723396050.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607bcee073ee5---sunajo.pdf
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acdb6314413---74163839837.pdf
- https://annjulieskarpmo.com/userfiles/file/lupasono.pdf
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/0do078a73gf784v8r4ufgldm92/4696448013.pdf
- http://maynenkhipuma.vn/quangbasanpham/app/webroot/upload/image/files/85236152370.pdf
- https://dewalt-naradi.cz/media/upload/editor/file/lebomuwejot.pdf
- https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/po0eo180va9v14r4ble2l1905r/bilukulos.pdf
- http://davisfolk.net/clients/1/1f/1f1070e31f35868a9a13f38ee7dc887f/File/27467944526.pdf
- http://kimbuunguyen.com/uploads/userfiles/file/54312510732.pdf
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160946026bd24d---tukifejonekelefakazivo.pdf
- http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c923e286c2e---xezitalivotagev.pdf
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16073ec2999d17---rulaz.pdf
- http://gourmethousemacau.com/UploadFilesfile///lezejozebedomu.pdf
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160d78c1914f0b---70015942317.pdf
- https://noble-program.site/js/ckfinder/userfiles/files/27049115577.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010d84.bin97d35cb6d4630afbfc7b947c6cd2cdc19a11641f76d2c03c5f266540aa8f43ac |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D84 | 18164 bytes |
font_01_sfnt_off00013d0a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13D0A | 16792 bytes |
font_02_sfnt_off00015521.binb39b253da13b830a300f402b7e3c1fa3e7d4caf29d7f02e539dac3ae99b0a4b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15521 | 10616 bytes |
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