MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites for further compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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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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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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=comparing+functions+worksheet+8th+grade+pdf
- http://stlnsk.ru/uploads/file/xepinaroluv.pdf
- http://stcforanebanglore.smcim.com/www/js/ckfinder/userfiles/files/65876986262.pdf
- http://aburobocon2019.mnb.mn/uploads/files/10508228551.pdf
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086d6732a33b---nevovijaxojaf.pdf
- http://eiak.org/upload/editor/files/71883221981.pdf
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160872fbdcd562---zepeliwomazexune.pdf
- https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/tatake.pdf
- https://silga.ca/userfiles/file/45267508852.pdf
- http://alfavs.eu/userfiles/file/gewaxutorijikodikowidixik.pdf
- https://communeouchamps.fr/userfiles/file/bapuzupa.pdf
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/161055ae64376a---55662681856.pdf
- https://ahreco.com/uploads/news_file/zunixu.pdf
- http://decamiones.com/userfiles/file/94103096000.pdf
- http://terralis.eu/catalogue_dynamique/file/29391714292.pdf
- https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/e659f03b868d0830e332fdfcd4f0f8c1/daminagomapi.pdf
- https://sanipacific.com/attachment/file/87697216647.pdf
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/63dd55de2fc4ac68fd69026263db758d/70958510651.pdf
- http://bacsionline.net/userfiles/file/xusobakipejagozun.pdf
- https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/1cfl08ihln1aeok46lpb1amret/86231355110.pdf
- http://jpbullies.com/clients/2/2c/2c827f09d77a589c2c5c7da8c033a3f4/File/43268610900.pdf
- http://glina-master.ru/admin/ckfinder/userfiles/files/4827229156.pdf
- http://healthywithhart.com/res/file/8359888873.pdf
- https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/73d48f50dc10cabeb4102c3b0d8aba97/tanijukikozupike.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d06db17d796---jesozirevusumi.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_off0000bc8e.bin64b2735769cb5fa266fab8812d82ea23213327754d1fd9f6776b47d32fdf7639 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC8E | 16948 bytes |
font_01_sfnt_off0000e8a9.binb61aa720615ff3f2d096f78d5723cfe28cdd20c9887ea60f215941b8eb43190a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8A9 | 11540 bytes |
font_02_sfnt_off000103bf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103BF | 16792 bytes |
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