MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicating a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing further malware. The primary function appears to be redirecting users through a network of sites, potentially for SEO abuse or to serve malicious payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 6
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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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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://nnt52.ru/userfiles/file/kotirimugibufukapesejixo.pdf
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16080d56795481---disus.pdf
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d95c197a55---zojemagivifu.pdf
- http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c17806ecc55---zegapajowufavumeburobija.pdf
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/73a1168e301e069fd03990414c707a79/mozuxotoxasikomijiru.pdf
- http://thegioituigiay.net/uploads/files/detusitopepitijabevez.pdf
- http://asea-admin.com/_userfiles/file/20210516063308.pdf
- http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160729cb340a08---pazemokipuvu.pdf
- https://alianzatours.com/imagenes/file/mijigikulodiruma.pdf
- http://henanshuangxin.com/d/files/vesafivalaralutoxasokuf.pdf
- http://www.sport-konyv.hu/userfiles/file/xozogavipegomelujuvap.pdf
- http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160742e446c4a8---55959657090.pdf
- http://khamtribacninh.com/images/files/nezavelewakute.pdf
- http://tunglamgarden.com/images/fck/file/zorovow.pdf
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/ac024d33d761ee2aa1344825cc4e7e5b/forugixog.pdf
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/138f38f2c023fa9fa76a5d85c2fcfe81/gutusu.pdf
- http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b37747313ed---tugixo.pdf
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/b1bb9030d4bf9bee717cd33dc04d867a/towasuxadabup.pdf
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bed589d373e---21095761156.pdf
- https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba69e36d80---66645572055.pdf
- https://healthcareadvisorsgroup.com/wp-content/plugins/super-forms/uploads/php/files/vned32rih4mo9em5vlimkrmg35/bejiduvonofadegiwe.pdf
- https://masukpt1.com/contents//files/64529257519.pdf
- https://haidangpc.com/contents/files/53633574180.pdf
- http://pspectr.ru/userfiles/file/fevifamododuluboso.pdf
- https://bhsbeacon.com/FCKeditor/file/jezusatelofarivoser.pdf
- http://aaaexpressheating.com/userfiles/file/40724461893.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=beginner+fingerpicking+guitar+songs+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_off0000f41f.bineac3b12ef6ea8e52240f614cc88f30e29114343bdaac8aedec6c42b217bb63a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF41F | 16964 bytes |
font_01_sfnt_off00012045.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12045 | 16792 bytes |
font_02_sfnt_off0001385c.bin423cad2df2c30873fe5ba04cf72a498a6f0bd4802f51d33bf31234dd95e43d12 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1385C | 10996 bytes |
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