MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous links, many pointing to websites hosted on compromised WordPress installations or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery through these external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://queure.ru/uplcv?utm_term=night+chapter+5+questions+and+answers
- https://weboonline.com/ckfinder/userfiles/files/58667710636.pdf
- http://shriadinathbank.com/uploads/73924596933.pdf
- https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/e96ec299972cb6ad55205dbcdc743fc5/gaximoxiwosoguzefogad.pdf
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/23e65cf8a6e23d3fc3e05de5f51949f8/gewiviwekeb.pdf
- https://brothers-music.com/ckfinder/userfiles/files/netekumabosozoruvira.pdf
- http://alibabashipping.com/userfiles/file/zasoxi.pdf
- https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/rlis1o82s778l3lcontrj8vp4u/49978508143.pdf
- http://bethanybaptistcolumbus.org/clients/75549/File/86515125705.pdf
- https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094485bd2e20---nuwoberidaf.pdf
- http://www.recko.ru/ckfinder/userfiles/files/luxelefokunoraweda.pdf
- http://akkoryazilim.com/userfiles/file/zejifidiliserofowodevogid.pdf
- http://ahxxzx.com/userfiles/202107/file/96884125280.pdf
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16092819b19605---14356277374.pdf
- http://baugeraeteverleih.de/benutzerdateien/pamusafiso.pdf
- https://remoteyourstaff.com/calisma2/files/uploads/runikiwofuguzenuzaz.pdf
- https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/0n4s63bjtvdgppnm09ntbvj9pe/6820363489.pdf
- http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099966639955---ribusudeda.pdf
- http://beerskiboot.com/img/upload/file/68264287857.pdf
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d3c7ae0121d---fujaxo.pdf
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160acb652ee197---vofepodubog.pdf
- http://improntediteatro.it/userfiles/files/60937411381.pdf
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160745e336ef64---79670391146.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_off00010d1d.bine1d9e61c86f42d00e36c2559f1f973c4b141c2d7fdfb6e9ba6e3798df5e3a6e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D1D | 16780 bytes |
font_01_sfnt_off00013899.bin2aa99a0c50ec183686662e6b23e0db6312c59ea2718b75c582b0ef9491136848 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13899 | 11192 bytes |
font_02_sfnt_off00015263.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15263 | 16792 bytes |
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