MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The document body was unreadable, but the presence of numerous external links strongly supports the link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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 http://xn--12cm8caae5d9a0a0a1dxk6dd.com/user_img/files/56230527608.pdf In PDF document text
- https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/al43vo6j744lbtp5ahvtdjl737/76828519252.pdfIn PDF document text
- http://thermcom.cz/userfiles/file/22186061387.pdfIn PDF document text
- https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/1qom0qpr25f08d3lbjp13ri35i/54165228377.pdfIn PDF document text
- https://alsterparkett.de/wp-content/plugins/super-forms/uploads/php/files/4ndek6ivc7ktt3dcotvlf82jne/22488322850.pdfIn PDF document text
- http://accomplishtheimpossible.com/userfiles_ati/file/20820683619.pdfIn PDF document text
- https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/372hfmgal3gjbh2j9gttmfa896/kodizusisunuxopiluwos.pdfIn PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/4a2af3621ab82642e32fd11a4ffd6b6f/nukunakedopevef.pdfIn PDF document text
- http://mastervgtour.by/var/upload/file/75008665193.pdfIn PDF document text
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160af7165ce3a5---xatuwomekirafufi.pdfIn PDF document text
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6dd817f28---29903000941.pdfIn PDF document text
- http://litho-and-co.fr/ckeditor/upload/files/tabovexofajaru.pdfIn PDF document text
- http://kapelski.pl/userfiles/file/fopigevuligomiru.pdfIn PDF document text
- https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/36dbdf4ad4761dad47907e2021bcdefc/56504058926.pdfIn PDF document text
- https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/28a143a377035ceaba9e1769bf590276/dazidosowusobate.pdfIn PDF document text
- https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a631bcb1e60---49484587913.pdfIn PDF document text
- http://minutemen-jrotc.com/clients/84940/File/62586094676.pdfIn PDF document text
- http://szpital-sulecin.pl/images/fckfiles/file/wewedogupufevorebeletu.pdfIn PDF document text
- http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b8d9b42ac---22394421853.pdfIn PDF document text
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a936396c02e---devuzivatiwokekejowado.pdfIn PDF document text
- http://studiofelician.com/userfiles/files/padubidaselet.pdfIn PDF document text
- http://dishandspoonproductions.com/ckfinder/userfiles/files/86711012940.pdfIn PDF document text
- http://salondebellezaanamariaromero.es//ckfinder/userfiles/files/pobazivanara.pdfIn PDF document text
- http://paradisetourkorea.com/FileData/ckfinder/files/20210604_CD4EE85FA6E66E87.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f93cd55618---disusud.pdfIn PDF document text
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c998f864d8---nebew.pdfIn PDF document text
- https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/nta2oebiufe2rvsfmjr16td92u/18287728883.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=the+end+schoolPDF link annotation
- 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_off00017bbf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17BBF | 17568 bytes |
SHA-256: 1284ce1161975cb3a9e5e37ba074e3aa676511cc12ece0abc28dadd335ada5ca |
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font_01_sfnt_off0001a977.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A977 | 9976 bytes |
SHA-256: e617bf2ac175207de3f29199f07637f4ab8aa530d75e0d1c33ab85676c81628e |
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font_02_sfnt_off0001bf7c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1BF7C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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