MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URLs, many pointing to compromised CMS upload directories, suggesting a link farm or redirection mechanism. The primary purpose appears to be directing users to potentially malicious external sites, consistent with phishing or malware distribution tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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://huntic.ru/uplcv?utm_term=words+that+work+pdf
- http://renovator.cz/files/file/tizimorulotivuzitaxusutex.pdf
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089d2aa726d1---88320645557.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fc12a7df33f2099896e1b72dd3917794/dozijuse.pdf
- https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/t9gqp8qd3tuq2qqasudhqa2l52/8526522047.pdf
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16081317dcb07f---gupenig.pdf
- http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a71bd10801f---18658868331.pdf
- https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16098ae5d02088---31432879214.pdf
- https://monocroma.it/wp-content/plugins/super-forms/uploads/php/files/0bc48631a872c993d3f4f3870b0c0bbf/sororuwokotezejo.pdf
- http://rudolphi.nu/userfiles/file/39836609671.pdf
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/mpohvhfkfjinvpr2q105gsfr23/wuvizem.pdf
- https://aimhc.com/userfiles/file/88849730524.pdf
- https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/cfee7ckqbv67ua788hm7j0142e/xagixutaxumarero.pdf
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/16096272a02d90---57306347012.pdf
- https://akamercedes.com/images/uploads/files/25772744495.pdf
- http://weifong.tw/fckimages/file/72693443229.pdf
- http://expertsystemgroup.com/file_media/file_image/file/44011025144.pdf
- https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c2d4617cedd---62720392331.pdf
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae6f923c48b---radakerixugidagirikokenun.pdf
- http://changecn.net/ckupload/files/55475814498.pdf
- https://nadamasristorante.it/file/10448980730.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_off0000f4a9.bin5faaf24df51ea4d7551fde035bdd36705c5b3d5c423814ccd010220f83c5cee3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4A9 | 17216 bytes |
font_01_sfnt_off000121a1.binc38e7724638b0e9962da49469148fbd25fff73aacce13205f12b18ecb509ab30 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121A1 | 10392 bytes |
font_02_sfnt_off0001395a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1395A | 16792 bytes |
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