MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URIs and a link farm heuristic indicates the primary goal is to direct users away from the document, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://eurosan.pl/user_images/file/8218019691.pdf
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607b81a916ca1---41550228335.pdf
- https://cursosgratuitosonline.es/wp-content/plugins/super-forms/uploads/php/files/jd54g21ivdmd8nvi0ev1025mkq/42194984498.pdf
- https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/013klci8u24gi9pvelhaglko63/30767609348.pdf
- http://tate79.com/clients/868750/File/sepuzufuro.pdf
- https://ukmriptek.org/codeIgniter-hmvc/userfiles/files/nofik.pdf
- http://barudan.hk/UploadFile/file/20210610013217032.pdf
- http://ceomit.com/fckupload/file/talowugewo.pdf
- http://caydinhlang.net/userfiles/image/file/11970509558.pdf
- https://groupburuemas1.com/contents//files/segug.pdf
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/8fa2b20bc95c673ba79ebb2bb3e65c5b/44574997418.pdf
- https://dalycity.com/wysiwygfiles/file/66358607742.pdf
- http://ainut.fi/userfiles/file/24828670187.pdf
- http://baschin-heizung.com/meineBilderAlbertGrundschule/file/92102444853.pdf
- http://sungsam.net/userData/board/file/lubizobawumu.pdf
- https://ville-saintleonard.fr/pdf/29596476518.pdf
- https://ladymamashop.com/uploads/files/202108280318474992.pdf
- https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/11k89pf9bcv8h1qej1ok9hf4nv/dinejivalezativebexi.pdf
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e44a4aee3d0---97395193624.pdf
- https://patidarpalanpur.com/web/k/main_admin/ckfinder/userfiles/files/jivabe.pdf
- https://traveletrust.com/basefile/traveletrustcom/files/fegasar.pdf
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076243719f2a---88080166894.pdf
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/qhjcun5vu467qchrvco5l0o901/dafurumije.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=subject+verb+agreement+singular+plural+worksheet
- 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_off0000d257.bin30c9995bd153388b74e0ddf8efe70fc51df31226efa8cddf0b177d04b67cb8c9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD257 | 17792 bytes |
font_01_sfnt_off00010085.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10085 | 16792 bytes |
font_02_sfnt_off0001189c.bin850c4e1508072aa80e6df8a370f5d77547236174f0394de62e766ed16c140a89 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1189C | 11508 bytes |
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