MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. The primary function appears to be directing users to external, potentially compromised, URLs.
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 http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee16932ae1---48270363479.pdf
- https://pmeds.us/userfiles/file/jutixuxadufijevelopiwu.pdf
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160886691715fd---fubonujus.pdf
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/218dddba8ee447078f5e41e53c5f4900/fozexejupuzabopaselo.pdf
- http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/1d58734f3d7f40100eabb9f73474b8ac/kinewusozodalapovo.pdf
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/e7b6658d9e04595eeab1824a3d139222/telopogifupaxowomozig.pdf
- https://dodatkireklamowe.pl/web/uploads/files/48227804136.pdf
- http://bociany.sk/media/file/nawikufudagokusub.pdf
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096f8e6e18db---fikewirike.pdf
- http://dungcubepgiangtrinh.com/webroot/img/files/96559263025.pdf
- https://liur-krd.ru/userfiles/file/15413478030.pdf
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/b2f2ee90a4affa48d07041a7cdbfbcbf/70232038491.pdf
- https://prosperitas.be/data/assets/file/91545336863.pdf
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/cea5346b666b119dbfaf9eba4f67f6b0/damilid.pdf
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcdbf29faf---ruwavivu.pdf
- https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/qjdk7ds8andd0b8udp9ek2iqfm/31560547298.pdf
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160890d55f0f49---gubotadixowusezonatixewaz.pdf
- https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/22ac5bc3108b16f58298c3229b018361/48212486406.pdf
- https://gachbinhduong.com/upload/file/32393582721.pdf
- http://bluecars.pl/userfiles/file/9478126735.pdf
- https://pmms-online.com/assets/file/96126764517.pdf
- http://mosjob.ru/images/file/mixunumabukigudojazovujor.pdf
- http://inglewood1968.com/clients/68690/File/lenatorivujo.pdf
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4741cbd9c7---xevovu.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c18022d1c55---zakujikavanezi.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff447ef0f6---7102120143.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=fore+bearing+and+back+bearing+in+surveying
- 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_off0000f360.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF360 | 16792 bytes |
font_01_sfnt_off00010b77.bin75958e3bf08acbc4dcaf1823f68c5a52de9d400b09b1412de25df45d92e21354 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B77 | 10892 bytes |
font_02_sfnt_off0001248e.binede496a846089531b021900d87a24f1bbd81e67b3b25741866f72cee26f73dc1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1248E | 17548 bytes |
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