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 of which point to compromised or disposable hosting. Heuristics indicate this is a link farm designed to redirect users, with a high ML score and ClamAV detection confirming malicious intent. The primary purpose appears to be directing users to potentially malicious sites, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
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://vstarmp.cn/upload/files/20210719_064257.pdf In PDF document text
- http://svb-volleyball.de/userfiles/file/senemukakafunas.pdfIn PDF document text
- http://centroolosprato.it/userfiles/files/85486922873.pdfIn PDF document text
- https://abugfreemind.com/userfiles/file/97942515897.pdfIn PDF document text
- http://unseretochter.com/images/file/29126206831.pdfIn PDF document text
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608276b83692a---83235716664.pdfIn PDF document text
- http://avandcie-energy.com/ckfinder/userfiles/files/25130409894.pdfIn PDF document text
- https://hagepoorter.be/files/files/zabekowupupuzatif.pdfIn PDF document text
- http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608196759e2fa---wumivosufokivoribusalu.pdfIn PDF document text
- https://area34.info/wp-content/plugins/super-forms/uploads/php/files/smv4d8vshj1t8nih6bm5kaeso3/78647734491.pdfIn PDF document text
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160810bdc0564f---86017175350.pdfIn PDF document text
- http://scuolascifondocortinadolomiti.it/userfiles/files/dolufaluvowe.pdfIn PDF document text
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/fe96ee45a4cf1072ce2a85222d1ccd01/lotelemolitifikar.pdfIn PDF document text
- http://gelinyuanyi.com/upload_fck/file/2021-8-15/20210815203322548641.pdfIn PDF document text
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160937fc084194---19127694324.pdfIn PDF document text
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/79d563f8887dc0536441c80cdc6fc260/5883823780.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/pllo8ng54rq48nj4e4vudva2o3/fenuwajuzibovip.pdfIn PDF document text
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075224c72b59---merafoxivase.pdfIn PDF document text
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1610d0c551651f---3306796307.pdfIn PDF document text
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1611436018939d---pikon.pdfIn PDF document text
- https://cityface.cz/res/file/91726349350.pdfIn PDF document text
- http://wooshin.kr/uploaded/file/1848793951609b5e807a8c5.pdfIn PDF document text
- https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/72342097c42efee2a1bf45b102a1ae36/kuluwutudulimulomiruzugij.pdfIn PDF document text
- https://condicionamentofisico.com/arquivos/file/puvonumagonitinidinazoz.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=ccna+routing+and+switching+complete+study+guide+2nd+edition+pdfPDF link annotation
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160996927e53ed---kadikawutij.pdfIn PDF document text
- 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_off0000c5e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5E8 | 18280 bytes |
SHA-256: 5ffad16d0734169b3e15ff8e426280c2be64286fe0556c5bfd3044a3660f3b68 |
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font_01_sfnt_off0000f5e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5E9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010e00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E00 | 11516 bytes |
SHA-256: a78813e2c9cf52524833e0146a101d7f123124d1b588e047300ecf84e3141bdd |
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