MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many pointing to compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves luring users to external sites via a link farm, potentially leading to further compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160812c6bd5a7a---fonewusaxejenopijaxor.pdf In PDF document text
- http://hasyo.net/files/file/dudaneguguxelupele.pdfIn PDF document text
- http://tourister.kr/userfiles/file/4057309748.pdfIn PDF document text
- http://ipceurope.eu/assets/file/87841483131.pdfIn PDF document text
- http://onsijsselstein.nl/userfiles/files/33928218443.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c869cd9e1ad---50803184223.pdfIn PDF document text
- http://lachina.cn/upload/file/xifozaragipuvapuwutaxoro.pdfIn PDF document text
- https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/kptu6jdrio7mk1ctkbcasafba8/44970366361.pdfIn PDF document text
- https://marljivo.hr/UserFiles/files/fisubatefutuvujuvamopu.pdfIn PDF document text
- http://www.iece.in/userfiles/file/gulom.pdfIn PDF document text
- https://menlopark.com/wysiwygfiles/file/3740593053.pdfIn PDF document text
- http://automsystem.com/UploadFile/file/20210907201052836.pdfIn PDF document text
- http://artdealer.vn/upload/fckimagesfile/34c7f83fa612a13a5a451941468bfe87.pdfIn PDF document text
- https://soechi.id/userfiles/file/66668118139.pdfIn PDF document text
- https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdea81ca07---monotuginenazuneka.pdfIn PDF document text
- http://adaviestransportltd.com/userfiles/file/winavab.pdfIn PDF document text
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/najn9jfimhkn3tt9a8489rln66/44642311074.pdfIn PDF document text
- http://hoadondientu-ptp.vn/images/ckeditor/files/zefeweraratuvez.pdfIn PDF document text
- http://lncxjzxxw.com/upload_fck/file/2021-6-15/20210615024505614342.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=pyridine+n+oxide+pdfPDF 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_off0000ba48.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA48 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d25a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD25A | 17864 bytes |
SHA-256: fc59feb2bc5fd414d8db2614f1b8f8d67e5e04121704de612908620ee31c1219 |
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font_02_sfnt_off00010048.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10048 | 10232 bytes |
SHA-256: 81113853c2237c8bb236a48add27ee31575a4ffb60dd5a86414583ddf98720b5 |
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