MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. Heuristics indicate it functions as a link farm, directing users to multiple compromised WordPress upload directories. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fc9aa74bd---8692359281.pdf
- http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086f902bc25c---68987390694.pdf
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0cc3887597---vomotajavuwe.pdf
- https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/f4ea471abda6e219115e7e45f13053be/76168518599.pdf
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607a328994462---16320136482.pdf
- https://proxus.nl/file/29618005019.pdf
- http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075c57f9e97f---58262810606.pdf
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d8e094708---buwekol.pdf
- http://popnmusic.fr/userfiles/file/82483358060.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6abf8752f---19852810193.pdf
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160850de23093e---fotopusekovomajoridoja.pdf
- http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/gvvgkcuk3190u56cg7vq8ms3sc/37665430395.pdf
- http://moyamoya.center/images/hand_uploaded/files/21580974014.pdf
- https://aparcaderoshaddaichile.cl/uploads/images/files/zudorasajavitufe.pdf
- http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe9bb9bb7f---98179981913.pdf
- http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b38571af8b7---70967035848.pdf
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16087a67944eef---29660482285.pdf
- http://www.alrafeef.com/faisaliya/js/ckfinder/userfiles/files/54118129539.pdf
- http://giaoducvietnamtv.com/images/ckeditor/files/gorijesojagisewatila.pdf
- https://alkalacarservice.com/public_html/userfiles/file/rifiwevapisekir.pdf
- http://costanzolegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/3031954943.pdf
- http://www.gesas.it/media/mailinglist/file/juboxi.pdf
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8e4b90fdf---wusorodufon.pdf
- http://eska-lift.ru/userfiles/file/93734020271.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=what+is+empirical+formula+of+acetic+acid
- 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_off0000f3cf.bin4e8bd2ad718e128449c7592b763f4c60e4acaa73ea5f35034726f17a29ac65a6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3CF | 17104 bytes |
font_01_sfnt_off0001208a.bin163357822fff88c6b23af1e2c3c14456d9d7d87b0907fc2c711ddff7f6d75a81 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1208A | 10876 bytes |
font_02_sfnt_off000139ab.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x139AB | 16792 bytes |
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