MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm with numerous URLs pointing to disposable hosting, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple external URIs and a link farm heuristic confirms the document's purpose is to redirect users to external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/13939120552.pdf In PDF document text
- https://truonggiangcompany.com/userfiles/file/72929911074.pdfIn PDF document text
- http://studiosaletta.it/userfiles/files/38790436178.pdfIn PDF document text
- http://koryosushi.com/uploads/files/16078848677.pdfIn PDF document text
- http://aliceinformaticasrl.com/user/pages/jeripitepabanapexebigix.pdfIn PDF document text
- https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/9q3m4afotves0stagjnvb2oca0/zezegobikotobituko.pdfIn PDF document text
- http://startmatbaa.com/userfiles/file/lulinimudodubeposulebofe.pdfIn PDF document text
- https://seerupit.dk/assens/file/xotomalivunodaxitara.pdfIn PDF document text
- http://h-p-n.fr/catalogue_dynamique/file/91849844489.pdfIn PDF document text
- https://atlanticcompact.org/userfiles/files/65619207571.pdfIn PDF document text
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135d509447ee---pafisi.pdfIn PDF document text
- http://veterky.ru/ckfinder/userfiles/files/sesuvokekuseragubif.pdfIn PDF document text
- http://radyoislam.com/resimler/files/3743697777.pdfIn PDF document text
- https://businessincasey.com.au/application/third_party/ckfinder/userfiles/files/13477534097.pdfIn PDF document text
- https://heritran.vn/uploads/news_file/62397004908.pdfIn PDF document text
- https://pvesc.vn/uploaded/file/keworowemomelekupod.pdfIn PDF document text
- https://gospel-streams.com/asset/ckfinder/userfiles/files/17942920767.pdfIn PDF document text
- http://rosg.net/sa_upload/userfiles/file/20210901135304.pdfIn PDF document text
- http://bestapp4u.com/admin/uploadedfiles/file/15286919691.pdfIn PDF document text
- https://plewmal-d.com/Uploads/files/56210458844.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161313fea1abb7---51381134413.pdfIn PDF document text
- https://bdaudit.ro/userfiles/file/folunogogitamuvebexu.pdfIn PDF document text
- http://321eastern-thailand.com/userfiles/files/54294523306.pdfIn PDF document text
- http://palirna-frydek.cz/uploaded/file/30287240821.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=apk+folder+mlPDF 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_off0000d858.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD858 | 17460 bytes |
SHA-256: c7b3e8bac47c20229196231561fa46aba488170d912934ed2d325f0694a02228 |
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font_01_sfnt_off000104c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104C4 | 10108 bytes |
SHA-256: 5e2ef7ed4db36f05dd174ebde8a75f8e71209d55b118ed6cefdb8ed5c1085070 |
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font_02_sfnt_off00011b51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B51 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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