MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous URLs pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of multiple external URIs and link farm heuristics strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://synerhu.ru/uplcv?utm_term=5+letter+words+starting+with+d
- https://bccphil.paramedix.biz/uploadfiles/file/gajif.pdf
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137e9e4b24a5---zilezikevamep.pdf
- http://songhandiban.com/uploadfile/file/2021090613342073499.pdf
- http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613c7d9469f5d---sasekelejexepa.pdf
- http://contua.org/userfiles/file/80052320367.pdf
- https://www.cifphosteleriayturismo.es/ckfinder/userfiles/files/47752642413.pdf
- http://gymostrov.org/gymostrov/userfiles/file/nadavofituwekixir.pdf
- http://eventclub.pl/userfiles/file/57440973517.pdf
- http://acupunctuuryao.nl/ckfinder/userfiles/files/73362671895.pdf
- http://tbm-mova.by/images_from_html_editor/file/voner.pdf
- http://analogsys.com/uploaded/file/18761712176136f9272e649.pdf
- http://studiolegalezullo.eu/userfiles/files/46503275893.pdf
- https://gencshow.com/upload/ckfinder/files/16214879916.pdf
- http://wellfoto.cz/pictures/files/mafifizarewusaduvunala.pdf
- http://electronicaindex.nl/images/uploads/92580768787.pdf
- https://mtydizayn.com/userfiles/file/naxav.pdf
- https://icon-studios.com/userfiles/file/jafalaxebipawavotimiwuxa.pdf
- http://taiwan-casters.com/userfiles/file/vudovulego.pdf
- https://eccdc.org/application/webroot/userfiles/file/wevuwar.pdf
- https://balticstroy.com/uploads/files/zuzamel.pdf
- http://jtylek.pl/Upload/file/benuwinujodomug.pdf
- http://vmkmsz.hu/userfiles/file/pomuzebaluwarimi.pdf
- https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b8e83a0008---58983405538.pdf
- https://cape-electronics.com/media/file/70746260497.pdf
- http://jjburgerut.com/uploads/files/powofukixowe.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_off0000c882.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC882 | 16792 bytes |
font_01_sfnt_off0000e099.bin05be05ccecfb70be1bb677b0a0c32d831b33407e19d128098eb395830920cc70 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE099 | 10652 bytes |
font_02_sfnt_off0000f8bb.bina517a4b63c72fb75ab4b3ecb4d415163a85271945c04b042cde06925f89e5808 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8BB | 18292 bytes |
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