MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also contains numerous external URIs, including links to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 7
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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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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://oniceh.ru/uplcv?utm_term=avenged+sevenfold+paranoid PDF link annotation
- http://zhfangyuan.com/uploadfiles/files/xutividoguzewumu.pdfIn PDF document text
- https://we-plus.tw/ckfinder/userfiles/files/20090056852.pdfIn PDF document text
- http://chickendaylacrescenta.com/uploads/files/feraposunomuxi.pdfIn PDF document text
- http://lokalizacja-gps.pl/userfiles/file/1056313892.pdfIn PDF document text
- http://thuaphatlailongthanh.vn/upload/contentFile/minhchau/file/51896072073.pdfIn PDF document text
- http://pspectr.ru/userfiles/file/gejikuxawakegakov.pdfIn PDF document text
- http://usa-ex.com/images/blog/file/31270143893.pdfIn PDF document text
- http://jts-electrical.co.uk/ckfinder/userfiles/files/xujibisos.pdfIn PDF document text
- http://sungder.com/upload/84242917766.pdfIn PDF document text
- http://vipnovini.bg/root/f/uploads/files/31190489273.pdfIn PDF document text
- https://samirkumarpaul.com/ckfinder/userfiles/files/95455206134.pdfIn PDF document text
- https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/e94d1c7324899e9bca42f378df9ba6fc/gexob.pdfIn PDF document text
- http://titibbs.xyz/js/ckfinder/userfiles/files/petegawamuzona.pdfIn PDF document text
- https://mlmrockstars.com/ckfinder/userfiles/files/40362462817.pdfIn PDF document text
- http://gibkrakow.pl/uploads/files/7569323846.pdfIn PDF document text
- http://shijijiaming.cn/filespath/files/20210902010020.pdfIn PDF document text
- https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/bd284238018021adc5ee808e8ccf9e79/24812345910.pdfIn PDF document text
- http://villapellegrino.it/userfiles/files/83925042294.pdfIn PDF document text
- http://bsp-oblspl.org/ckfinder/userfiles/files/lanepaj.pdfIn PDF document text
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1613b181880cdc---woriranomitaxufetega.pdfIn PDF document text
- http://rainhouse.kr/data/editor/file/1241042153612ff5e4e3b22.pdfIn PDF document text
- http://apluskleaning.com/admin/images/file/58766272532.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_off0000daf3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAF3 | 19488 bytes |
SHA-256: 8cb36290cdd8f35d37bf06ebcb9a3c04a75546d73ab0eb1d4b698f48335ea7b0 |
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font_01_sfnt_off00010d11.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D11 | 10624 bytes |
SHA-256: 2834f445f23906bf5bb9d6145946a7d693b52ea8004489012292a3288342b92f |
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font_02_sfnt_off00012549.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12549 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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