MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and numerous external URIs pointing to compromised WordPress uploads and disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely involving exploitation of PDF vulnerabilities to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 7
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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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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 https://synerhu.ru/uplcv?utm_term=runonuithread+in+service
- http://smileorganic.net/smileorgfarm/filesupload/File/70351914152.pdf
- https://manage4.realtourvision.com/rtv/ckfinder/userfiles/images/files/vefum.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/161500cb3a3ee1---81040846051.pdf
- https://etest.vn/app/webroot/uploads/files/39306747931.pdf
- https://basisnomor.com/contents/files/52864130059.pdf
- https://goacetours.com/ckfinder/userfiles/files/vobofusabogubinovat.pdf
- https://clubesolbra.com/uploads/files/50378163731.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1614ac7b73bb52---18336069504.pdf
- http://hometextiles-consultant.com/ckfinder/userfiles/files/lewupedudoxijixeji.pdf
- http://weddingdove.tw/uploads/files/202109270357302455.pdf
- http://khocabien.com/uploads/files/85990164055.pdf
- http://kimandyoo.com/userfiles/file/43849497009.pdf
- https://dukupahit.com/contents/files/60364074137.pdf
- https://people11people.gr/uploads/File/sijorojopud.pdf
- http://goodfortune.hk/UpLoadFile/file///43273517477.pdf
- http://budohurtsa.pl/userfiles/file/34478220570.pdf
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/161312b330046f---41633626445.pdf
- http://alteredcompta.com/buddha/ckfinder/userfiles/files/66507907088.pdf
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd76c0fe32---83774026163.pdf
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614d15876e085---sipomenatulovim.pdf
- https://inprovitcolombia.com/ckfinder/userfiles/files/9139249838.pdf
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd288559c2---89604357256.pdf
- http://holidayinntorino.com/userfiles/files/49219451668.pdf
- http://nakajima-ya.com/upload/save_image/files/3829258347.pdf
- http://aec.dbodm.com/js/upload/ckfinder/files/tujoxukeliv.pdf
- 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_off0000b128.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB128 | 16792 bytes |
font_01_sfnt_off0000c93f.bin8ed2b5c06335da6ec7e27d0610dba0fb073a9374c30dc7eee02edab63af4d80c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC93F | 10632 bytes |
font_02_sfnt_off0000e198.bindcf842fa0102ecc53a73d6f2859e271b91b34573f4807bb377329c90a7d9a439 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE198 | 15284 bytes |
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