MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external URLs hosted on potentially compromised WordPress sites. The presence of numerous links, including one with a 'treated with caution' UTM parameter, suggests an attempt to obscure the true destination and potentially distribute phishing content or malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://medvor.ru/uplcv?utm_term=treated+with+caution
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a9a322ed7a8---64825801698.pdf
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/39bfc8653c39acc2a2354992727cffc6/kefubexeroboxovozapani.pdf
- https://info-jimukyoku.jp/lot/upload/files/tawomivizi.pdf
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d4db2a9789b---63370028414.pdf
- http://alkanboya.com/files/file///sikibokusonepado.pdf
- http://aite-materials.com/upfiles/file/67975066104.pdf
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609452e86988a---wagizilamip.pdf
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd59847336---vewokibifo.pdf
- https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/5eeb7c73c45f59453cf2303ea8992eeb/4414682451.pdf
- https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a7bda0a67---figaliregur.pdf
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e415e9c137---nopemevez.pdf
- https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/6bfcc8398d3d9d0a361d71400092dabd/42339251365.pdf
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a80286dcf06---12840734991.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160949c56cf8c4---50505236739.pdf
- http://guoyangmoju.com/userfiles/files/33498019265.pdf
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/hbja0590ukvdtsnf3lketbvu36/27302995656.pdf
- http://merwepizza.com/upload/file/sojibazipapuxukevipifuj.pdf
- https://hoakhanh.vn/uploads/image/files/popofuzosimafivivometij.pdf
- https://pinpointfeedtech.com/ckfinder/userfiles/files/6490053034.pdf
- http://historia-bfured.hu/userfiles/file/9919082724.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b0e3bad5e---mevezafoxebopos.pdf
- https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607823cc69aec---mobapaven.pdf
- https://bustotoronto.com/userfiles/file/bosobuzude.pdf
- https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9497436cdf---bidinigepobo.pdf
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160881ce8bcb19---zabadozep.pdf
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/618d514001d5bb393ce71a905cb9fad0/mopebo.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_off0000f143.bin6f144c9808d65de3fbcae5e5d5eeaee65cb2bc3f91835a1c397c7c6c8152c8ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF143 | 18224 bytes |
font_01_sfnt_off00011fb9.bin9e5af65fcfa5a9b9d51688f195981309ec6c0483038dd19a89bc3d85d4620fde |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FB9 | 10400 bytes |
font_02_sfnt_off00013747.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13747 | 16792 bytes |
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