MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file detected as malicious by ClamAV and an ML classifier, containing embedded JavaScript. It also features a large number of external URLs, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution campaign. The presence of JavaScript indicates an attempt to execute code within the PDF viewer.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://krisoc.ru/uplcv?utm_term=qual+versao+mais+atualizada+do+android PDF link annotation
- http://dinhvi5s.com/images/newtech/files/rulevepomufodijito.pdfIn PDF document text
- https://snpwachq.com/files/js/ckfinder/userfiles/files/timotasolizejipav.pdfIn PDF document text
- http://randygordonlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/letod.pdfIn PDF document text
- https://aquatrustfina.com/userfiles/file/gilusu.pdfIn PDF document text
- https://marsanz.pl/uploads/fck/file/zuxosugi.pdfIn PDF document text
- https://egokituz.org/files/galeria/files/5435839513.pdfIn PDF document text
- https://arichaindia.com/userfiles/file/55786773085.pdfIn PDF document text
- http://sgo-bage.com/public/files/files/zotupetusajusutis.pdfIn PDF document text
- http://hrudolf.com/userfiles/bibesotazeg.pdfIn PDF document text
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/161473582a13fe---vosibosixujota.pdfIn PDF document text
- http://vrajacreation.com/uploaded_files/userfiles/files/90867220367.pdfIn PDF document text
- https://www.pelicanfinancialnetwork.com/ckfinder/userfiles/files/namedo.pdfIn PDF document text
- https://producto.works/userfiles/file/zemakijaxeguxoropezox.pdfIn PDF document text
- https://tonthephunglan.vn/upload/files/pujomapopegoxox.pdfIn PDF document text
- https://girisimhaber.com/uploads/file/1840178272.pdfIn PDF document text
- https://towa-aaa.jp/userfiles/file/pifogurisi.pdfIn PDF document text
- http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143fc3658099---14557401091.pdfIn PDF document text
- http://emrc.ie/upload/imagecontent/file/xogivew.pdfIn PDF document text
- https://soalmatematik.com/userfiles/file/danewivegajolalukimadodas.pdfIn PDF document text
- http://usatovl.ru/upload/fckeditorfile/8920378406.pdfIn PDF document text
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16141d7c571e87---xomex.pdfIn PDF document text
- https://at1-turbo-j3t.com/contents/files/wogeginuribimazuravune.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_off0000df30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF30 | 10692 bytes |
SHA-256: c50617059fe5df2a1acdbe6f9c4eb1a6161a35157ae8f58c6291f28ec8eed1e9 |
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font_01_sfnt_off0000f7d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7D5 | 19688 bytes |
SHA-256: 0e0f444ae6cb679617272e63ab4b0a03c1ef5b5992e96b277145b3cd670e21c6 |
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font_02_sfnt_off00012873.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12873 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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