MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF contains numerous embedded links, many pointing to compromised CMS upload directories, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple external URIs and link farms indicates a coordinated effort to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://oniceh.ru/uplcv?utm_term=legend+thoughts+in+english
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9cba6bc48---79342147038.pdf
- http://hotdeals24x7.com/ci/userfiles/files/91224126007.pdf
- https://alkathirilaw.com/userfiles/files/bigisuvedabavesi.pdf
- https://kermanrooz.com/img/files/55373573275.pdf
- https://clubforeducation.com/FCKeditor/userfiles/file/sagowa.pdf
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607755340a561---pugixopiwogarus.pdf
- http://drthchowdary.net/userfiles/file/89896686352.pdf
- https://catbasailing.com/upload/fck/file/zototafijiloto.pdf
- https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/d85f266656a8ff881901afdb2aaef904/liwuxazemaxupatutoxivuwom.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096528e88d38---9633760831.pdf
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab1b35d015---wavewoximuragatubonabu.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083f880653b2---11338415113.pdf
- http://crescentcarpets.com/userfiles/file/kitegopusezeko.pdf
- http://jxloanchien.com/style/postimage/file/59641261911.pdf
- http://floral-design-lindgens.de/userfiles/file/4368748322.pdf
- http://easyreturn.store/userfiles/file/83641011689.pdf
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16080ed96c574f---kojageditivo.pdf
- http://bbpcosmetics.com/admin/upFiles/2021-6/file/87817674405.pdf
- http://archerelectricsupply.com/userfiles/file/jajefajud.pdf
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609820f20ef01---momofisawa.pdf
- https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/ca1313e71e8510b751530ce3b19aa057/56615354960.pdf
- http://allycatering.com/userfiles/refuxisuzu.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_off0000fb18.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB18 | 16792 bytes |
font_01_sfnt_off0001132a.bin068c4fb4a9a4fcac3259c207ad35d08a677f46f6222f8754d3bafd54bb228651 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1132A | 17716 bytes |
font_02_sfnt_off00014117.bin4a28c08ac50410051d36f0e70e2e674c8aa6efbdff3f5644189fc5f3b774bc86 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14117 | 10324 bytes |
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