MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It contains numerous links pointing to compromised WordPress upload directories, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is intended to facilitate the download or access of further malicious payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.5901
Heuristics 5
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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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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 http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8122307cf---10867607464.pdf In PDF document text
- https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/hq110ikv030tbmuvajfoqmn6vd/limituv.pdfIn PDF document text
- http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609efc9b13e47---81950809186.pdfIn PDF document text
- http://consol.hu/images/uploadedimages/file/lutakepewajotir.pdfIn PDF document text
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1607d73260ffc8---kelozomosipuwusuxoxe.pdfIn PDF document text
- http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160710be72cfb7---80288800628.pdfIn PDF document text
- http://libertyquad72.fr/userfiles/file/46080475846.pdfIn PDF document text
- http://anhuicrew.com/upload_fck/file/2021-4-29/20210429142421559942.pdfIn PDF document text
- https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b7a12348bae---29493372277.pdfIn PDF document text
- http://esoftland.com/userfiles/file/50587253821.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/53f01q6ci63u84t6sp39tib111/mukanabexu.pdfIn PDF document text
- https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/48c9a9c8ccd8a711823a75f6dcbc6d79/lofeloriloja.pdfIn PDF document text
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/16635fa2b95c1c4901e44689ea73df3f/radeduwunazivemume.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/18b09c929b1788a2568b732ed528be52/16517024912.pdfIn PDF document text
- http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/bdd881008be0647a0811379727823016/447647061.pdfIn PDF document text
- https://produktybhp.pl/pliki_user/File/bovexusodadamefugusozoler.pdfIn PDF document text
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/559977d0e206ac17e1de2613ad4c5c27/pexelasafefunipeberan.pdfIn PDF document text
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160e982772532d---7240302043.pdfIn PDF document text
- http://plncse.hu/php_data/file/texaxomoriwoxetomejodux.pdfIn PDF document text
- http://cathugo.de/res/wysiwyg/file/3667686939.pdfIn PDF document text
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b72a5826f7f---9492657795.pdfIn PDF document text
- http://christschoolblr.in/userfiles/file/sukusotasagofojeruwu.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=compress+pdf+file+size+for+freePDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e9fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9FA | 10388 bytes |
SHA-256: 72bf3006154291dd3de6865d91edcf08b887d142cb73e5eaed4fccad43a01fa2 |
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font_01_sfnt_off00010177.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10177 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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