MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a large number of links pointing to compromised WordPress sites, indicating it functions as a link farm. The ML classifier strongly flagged this PDF as malicious, and the embedded URLs suggest a phishing or malware distribution scheme. The document body is heavily obfuscated and appears to be metadata from the wkhtmltopdf tool rather than user-readable content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
Heuristics 5
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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://smidgel.ru/uplcv?utm_term=what+color+does+cyan+and+blue+make PDF link annotation
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/50e8a0a636856be8cbdd6f5aac658976/7312068095.pdfIn PDF document text
- http://bong-dem-long.org/upload/editor/files/lukeruzavolev.pdfIn PDF document text
- https://actorconseil.com/files/file/15572006705.pdfIn PDF document text
- http://amoy-art.com/Upload/file/9575445087.pdfIn PDF document text
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160adba72a20e2---wiwenaloguriwekuxufesoto.pdfIn PDF document text
- http://jrpst.pl/userfiles/file/wubokezazujopekubijef.pdfIn PDF document text
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/ndr3tlukjhpcihtfs3qcjpdu3t/43808855429.pdfIn PDF document text
- http://varanini.pl/userfiles/file/50665443969.pdfIn PDF document text
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f4bcfa03d9---wupurifakezasuga.pdfIn PDF document text
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/49lku2jdc4a4637qulf28mvm04/fufiloxavobusiw.pdfIn PDF document text
- https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/2e1ceb39b98b1c596ed95fc3e8586030/xonivegalile.pdfIn PDF document text
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/arfv6aaitldjpn45sso16707pb/lubukonixol.pdfIn PDF document text
- https://medicentrumnz.eu/medicentrum/files/file/wazet.pdfIn PDF document text
- https://baoyi-chuck.com/ckfinder/userfiles/files/95804967176.pdfIn PDF document text
- http://aldo-ins.com/userfiles/file/dowoxikutizokevopamunesis.pdfIn PDF document text
- https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/c2510ef2c9b2dc35b2752940490a2e72/5062486593.pdfIn PDF document text
- http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608e483b33803---3814781424.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ffc83511f---3516594007.pdfIn PDF document text
- https://bursac.net/userfiles/file/30895603186.pdfIn PDF document text
- https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/1obkll6b2he76o5ohv45h58gn1/noxew.pdfIn PDF document text
- https://charlesstreetvideo.com/userfiles/file/nuramopuxojivija.pdfIn PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/23bbdafffbe6d6e274e7ca6735081eb6/99580660931.pdfIn PDF document text
- http://alnoorcity.com/userfiles/file/65322117743.pdfIn PDF document text
- https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/amlgnd91096s9iq938rj6pf223/lawasetowunozuribavati.pdfIn PDF document text
- https://mimpishiosatu.com/contents//files/19152177606.pdfIn PDF document text
- https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/ppgfntcqr8vecm67l0vo6u617l/21270349728.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ee89.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE89 | 10980 bytes |
SHA-256: 382b7d5e8e1dcad2ce7200ad6f4951b1d92bfd1e1c999b404f6cce48232f6fdd |
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font_01_sfnt_off000107f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107F3 | 19516 bytes |
SHA-256: 02ef659b767fd2cf5da0001b18fe6af435487df9c31dbf299e65e3eb9adc03d9 |
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font_02_sfnt_off00013951.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13951 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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