MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
T1059.007 JavaScript
The PDF contains numerous embedded URLs that point to various domains, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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://queure.ru/uplcv?utm_term=dual+boot+android+windows+7
- http://phuongsen.com/img-chamthi/files/14558012133.pdf
- https://stmpallet.com/ckfinder/userfiles/files/bebobojud.pdf
- http://soles2walk.cz/data/file/birosifewinoxoledat.pdf
- https://jlgardner.org/home/jlg/public_html/ckfinder/userfiles/files/fivojubukezivewivofavu.pdf
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f92fe887dd---92446921965.pdf
- http://fratellibeninca.com/images/file/bozuzifuj.pdf
- https://dailyhondaotomientay.com/upload/files/85785131916.pdf
- http://china-engine.net/ckfinder/userfiles/files/32227651092.pdf
- https://52fantasies.com/home/holly/public_html/ckfinder/userfiles/files/43562432672.pdf
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/qkgbcpusrijbjhmfho32o2v8h6/97690448844.pdf
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161316221d4815---79931487453.pdf
- https://interangkorcondominium.com/userfiles/file/44017499314.pdf
- http://scuolascifondocortinadolomiti.it/userfiles/files/1843610829.pdf
- https://soechi.id/userfiles/file/32917157037.pdf
- http://sgrappresentanze.eu/userfiles/files/5154271359.pdf
- http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/79069877824.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16132c8acd30b9---856656421.pdf
- https://dehayemek.net/upload/ckfinder/files/67626134714.pdf
- https://franchiseharbor.com/files/files/90810411567.pdf
- http://thechelseaff.com/user_uploads/files/fakexitano.pdf
- http://sieuthibongda.net/ckfinder/userfiles/files/64475108666.pdf
- http://club-integra.ru/userfiles/file/812803167.pdf
- https://isuzuphonoi.com/data/dulieu/files/52660698952.pdf
- http://dautuck.com/uploads/userfiles/file/mifebep.pdf
- http://jinsonmetal.com/Upload/file/51048291138.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_off0000dd49.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD49 | 16792 bytes |
font_01_sfnt_off0000f560.binb6c7ac1d6971e943f83ac6a6b863fedbc65d2a5a3c2e3445ebcc8587ccb1ce03 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF560 | 10488 bytes |
font_02_sfnt_off00010d62.bin85c6fa8a02b6a5356bd1a2adec4d3a4228c165f6917a14e64efe143ae21623eb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D62 | 17988 bytes |
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