MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of links, many pointing to domains associated with compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly support its malicious nature, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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----8sbnbd9chja.xn--p1ai/userfiles/file/jemeluwirepesewu.pdf In PDF document text
- https://kraftyz.in/ckfinder/userfiles/files/bepofovabepanojebaduwomel.pdfIn PDF document text
- http://tz5168.com/uploadfile/image/2021/05/22/file/20210522_220925_109.pdfIn PDF document text
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/fiir647bcs50hb6vk9das6ssfn/nepibezom.pdfIn PDF document text
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd9f685bda---27818075877.pdfIn PDF document text
- https://congchunghadong.com/uploads/files/87099962375.pdfIn PDF document text
- http://www.allatpatikapecs.hu/images/file/48471232999.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/42502130671.pdfIn PDF document text
- http://www.masozilina.sk/ckfinder/userfiles/files/dunivuxifewofivugefom.pdfIn PDF document text
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160736309ca585---79281163432.pdfIn PDF document text
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/6547dfc80d953a36b3f6bae9e20bcc20/lilarirurelututekuvasawam.pdfIn PDF document text
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609895c4c151b---guxukavili.pdfIn PDF document text
- http://ateliergermain.net/sites/default/files/file/sijutoxudurudaguvowu.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a304f7cce64---wufulurulutixeru.pdfIn PDF document text
- https://ready4use.ru/uploads/files/53485104464.pdfIn PDF document text
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/cglilrv6c0gfhae234qvvopjr1/30773978461.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=303+lee+enfield+smlePDF 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_off0000e8ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8EE | 10232 bytes |
SHA-256: 935144c7559aaa99f40be56d6aeb8c254e826ed42f19815f384ab743d3312e11 |
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font_01_sfnt_off0000ffd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFD0 | 18452 bytes |
SHA-256: be4f1eb6574a3e06b2ffa4ae6e898513203b49d4d703233c6b9aeb103e9c6684 |
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font_02_sfnt_off00012f9d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F9D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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