MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. It contains an embedded JavaScript stream and numerous external URIs, many of which are part of a link farm hosted on compromised or disposable domains. The primary function appears to be redirecting users to external sites, likely for phishing or to download further malicious content.
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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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://oniceh.ru/uplcv?utm_term=videoder+apk+for+android+11
- https://chinatupai.com/web/js/ckfinder/userfiles/files/mikixakuvagij.pdf
- https://gamepinleri.com/calisma2/files/uploads/76211508482.pdf
- https://777mto.info/contents/files/95966193021.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613985f9265c1---sukujadalewokopagotimupib.pdf
- http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/80389948645.pdf
- http://hainescentreasia.com/images/file/zewakipekadesixilos.pdf
- https://onderdurdu.com/upload/ckfinder/files/95377200392.pdf
- http://chothuexeninhbinh.net/data/dulieu/files/76363934539.pdf
- http://liebherr-tr.com/userfiles/file/82230327382.pdf
- http://baugeraeteverleih.de/benutzerdateien/xukave.pdf
- https://ddmmaze.altruistictech.org/documents/img/upload/files/44035520392.pdf
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613519e94bdb9---82911903042.pdf
- http://ocean-ex.com/images/blog/file/24196826195.pdf
- http://open.ua/uploads/ckeditor/files/14718643475.pdf
- http://modnyi-buket.ru/uploads/files/wokifugimejexamonakepuv.pdf
- https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16136ff7aa1666---numawo.pdf
- http://85560891.com/upfolder/e/files/20210905202257.pdf
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161412100132ee---7980587632.pdf
- https://xn----7sbbg1ddpkdc.xn--j1amh/uploads/files/84564948316.pdf
- https://iva-vietnam.com/userfiles/file/3160736974.pdf
- http://maymaygiaydachidang.com/upload/files/6564282321.pdf
- https://suadienlanhhanoi.net/upload/files/34130553883.pdf
- https://livre-d-art.com/ckfinder/userfiles/files/67556901149.pdf
- http://korvet-sp.ru/userfiles/file/56310802105.pdf
- https://bevillelecomte.ovh/ckfinder/userfiles/files/74068088729.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_off0000e220.bin8d686af878ca91f111a06e4d117d1a85ba545b6285622b586637df044d1db4b3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE220 | 17372 bytes |
font_01_sfnt_off00010f58.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F58 | 16792 bytes |
font_02_sfnt_off0001276f.bin755897a5a4b92c2eeb373c54f227b0a2d090b4b7e9f1c9655269c9766e8749d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1276F | 10292 bytes |
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