MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised CMS upload directories. The document body is unreadable, but the presence of numerous links and the detection signatures strongly suggest a phishing or malicious redirection attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9927
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://signika.pl/Upload/file/23715561429.pdf
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092a736537ad---84274834295.pdf
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ded7f0c76---kufimuwudinikubap.pdf
- http://www.alexgis.com/siteuploads/editorimg/file/jonevasubumeri.pdf
- https://binarbaidrealestate.com/public_html/userfiles/file/ponafirakebesax.pdf
- http://shortguycentral.com/ck_uploads/files/27368984061.pdf
- http://bellina.pl/userfiles/file/kikelajesisamar.pdf
- https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/pl8cums1k0a6ir4446qjqthdqr/rojozemavowirotilalotibel.pdf
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d205e0cc7b7---lirekisetigiz.pdf
- https://taechoclub.com/FileData/ckfinder/files/20210619_F9B1BD7F194B9BD7.pdf
- https://2acontractor.it/images/file/526366619.pdf
- http://aisef.org/uploads/userfiles/file/file/81149555414.pdf
- https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/14e0ce664b10930dc99e41f3d49a11e6/votofimira.pdf
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b760804f6e5---15870008692.pdf
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad17605ec9c---21463888073.pdf
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9f7843b4ef66c3a95f4bddb44a940edc/zabekejiligesu.pdf
- https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/pos2736rgsvf2rktikhbhqvj9h/rokarudedefazazapuboxe.pdf
- https://brmc.jp/user_data/userfiles/files/toxapijuw.pdf
- https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/8h6g11huv5cmjud6ouldiakmer/77373963775.pdf
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/ktnjv5b0rsus2vavv6erl3gnrf/18962729759.pdf
- http://entone.es/wp-content/plugins/super-forms/uploads/php/files/1428ae4bae76b3c4fa4f8c6323ce1d04/79294169939.pdf
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160a173c83ba87---vivedej.pdf
- http://owv-sad.de/userfiles/files/9994997451.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=one+piece+ep2
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d3d0.bin464caf6da255deab7655eb8f88c7a5c540915b2bbbd548d0f8c4a642aa850420 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3D0 | 19588 bytes |
font_01_sfnt_off00010f45.bin2a79c36915593001e3aea08fe286aba00a062096126e07f477c8eb5a2e37ec4a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F45 | 19428 bytes |
font_02_sfnt_off000141bd.bin9e545ea0e8b1aaf79f0b462b72a2ff1a7fc405ea7f3a81fa6e15357be78b7e59 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x141BD | 9816 bytes |
font_03_sfnt_off00015771.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15771 | 16792 bytes |
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