MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, forming a link farm. The primary purpose appears to be directing users to external sites, likely for phishing or to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9892
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://catamma.ru/uplcv?utm_term=how+to+voice+message+on+android
- http://thaoduocvn.com/userfiles/image/file/9878311679.pdf
- http://muszempilla.com/files/file/48176481561.pdf
- https://urbanlivin.lu/userfiles/files/nisedo.pdf
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/2b6c17e29f148ed4c4383dfb2d3c7e5f/zokonu.pdf
- http://yeosingol.com/FileData/ckfinder/files/20210919_915FC5FA8707B297.pdf
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/4ee2609ca9ce7d18d73e9a30da6b1925/36066616049.pdf
- https://alpinismbihor.ro/app/webroot/files/userfiles/files/47443996448.pdf
- http://coutleelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/navuwog.pdf
- http://wajl.net/img/file/202191851554.pdf
- https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/afe5a5c6ee05cd89ed25ef020b9e40fb/47598800729.pdf
- http://tubietelbar.hu/uploadfile/49404710514.pdf
- https://rougezenekar.hu/files/file/dubegutejotawe.pdf
- https://dcmheavyequipment.com/admin/images/file/86333413439.pdf
- http://savemaxint.com/files/file/gamesu.pdf
- http://96rangjai.com/userfiles/file/wenafivukisanikeduruno.pdf
- http://studioscoponi.eu/userfiles/files/votamevitupowamus.pdf
- https://lapakunited.com/contents/files/97043595545.pdf
- https://akemi.ro/hirek/file/pemitolukonufunup.pdf
- http://aiswaryamatrimonials.com/fck_uploads/file/niduluti.pdf
- https://ecohort.biz/userfiles/files/mubunasivawilusina.pdf
- http://pkpneu.cz/userfiles/file/10483376432.pdf
- https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/34912945010.pdf
- http://vinhhangvien.com/upload/files/50914904484.pdf
- http://bio86.fr/userfiles/fichiers/fuwob.pdf
- http://zespolbahamas.pl/zdjecia/file/zutogexisipa.pdf
- https://theurbanthinktank.com/files/danarumezigurenafeb.pdf
- https://zemiigori.com/uploads/file/42000349742.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_off0000dcfb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCFB | 16792 bytes |
font_01_sfnt_off0000f50d.bin8de39be8f8ac8dbaf8eaddb49fe70ca84f300754a4a26e793874957f01589086 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF50D | 17816 bytes |
font_02_sfnt_off000122de.binb8fb7eba16f2e5d6ec13aebad6e81206c4c1b5c270ac7c945e8a189089a261b9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122DE | 10808 bytes |
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