MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution scheme. The presence of link farms on disposable hosting and compromised CMS uploads further supports this malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 7
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a19905e28cd---5621979027.pdf
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16083bef3529f5---jolerimijapavirub.pdf
- https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/115vsrfkovu9ih8b6bnd1tc0u7/30352266922.pdf
- http://mulroyenvironmental.ie/userfiles/file/pefoxawetexupego.pdf
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/f1ae70c49c2e13935851b83d6913aa11/68561044012.pdf
- http://cuatro-pr.org/sites/default/files/file/16408756821.pdf
- http://dfh-consulting.com/userfiles/file/doxedolozoxenekodu.pdf
- https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/a9af40a176933f2a2ba510e7725610cc/23008720069.pdf
- http://apcmagon.com/userfiles/nudulafune.pdf
- https://watfordfairtrade.org/app/webroot/img/files/dekaresezekasagizifesu.pdf
- http://halaljones.com/uploads/files/nimem.pdf
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf1ad16c7e---56314480334.pdf
- http://brlairport.com/images/file/govawiwodoxuzozajusem.pdf
- https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/2416fb5eed15dcb6c84dc78b0e0d0ab1/58999690196.pdf
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160832b74e7327---1620929059.pdf
- https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/grfvljljshfodm9h3din1v63ju/3398626273.pdf
- http://www.look4job.gr/images/_user_na/file/gafiwakejisilaleji.pdf
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/b4b0f9ad17695b85b042be4024dffe73/lixozenitexij.pdf
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/78062a49aceaeb7d57763e1f5c7eb938/87373374611.pdf
- http://prestinieurope.ch/userfiles/files/zonoda.pdf
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bddbf67c845---54821705076.pdf
- https://okinawa4d.com/contents//files/zufuxasurikedaw.pdf
- http://anatolianlgs.com/userfiles/file/tejavozufowigawesa.pdf
- http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf0218d554---senojegavozaweminum.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=send+this+to+10+friends+chain+letters
- 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_off0000eec6.binc8c8a210572001f7b970c370fb6cc7377081bc6b2c8ba1c5999e1a2a69f703e8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEC6 | 10824 bytes |
font_01_sfnt_off000107af.binfc228e573d54ba47295193c8bb22e25751cd48886e96ef4af833375214a3b10c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107AF | 16592 bytes |
font_02_sfnt_off000132ed.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x132ED | 16792 bytes |
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