MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, forming a link farm. The embedded JavaScript likely facilitates the redirection or download of malicious payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://pixomot.ru/uplcv?utm_term=psu+needed+calculator PDF link annotation
- https://norservis.info/files/files/90888774085.pdfIn PDF document text
- https://camphacement.vn/upload/files/zowokafopomiju.pdfIn PDF document text
- http://ikuma-car.com/js/upload/files/86059532627.pdfIn PDF document text
- http://abwrichmond.com/uploads/files/murifoxemokikedij.pdfIn PDF document text
- http://vendsol.com/userfiles/file/tidipad.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/576abf46081a6185f4a1592c03351e02/jovorul.pdfIn PDF document text
- http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145319e9da53---piguwaposovu.pdfIn PDF document text
- http://www.somdattabasu.com/fckimages/file/goniladuw.pdfIn PDF document text
- http://angelofthewinds.net/ckfinder/userfiles/files/xofoduk.pdfIn PDF document text
- https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/161364b02c8b07---raxitusigazimuguxubese.pdfIn PDF document text
- https://agriplan-rs.com/dados/ckfinder/files/3729035995.pdfIn PDF document text
- https://brincandoeaprendendo.com/fotosempresa/files/15040830618.pdfIn PDF document text
- http://music-saikung.com/ckfinder/userfiles/files/doleguxozobabufadu.pdfIn PDF document text
- http://daithanhnam.com/upload/files/tofidasafer.pdfIn PDF document text
- http://dulwichtaxi.com/survey/userfiles/files/17418424509.pdfIn PDF document text
- http://dreamscar.eu/userfiles/file/49973629812.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613d2fa6c0f22---99381134629.pdfIn PDF document text
- https://altinhediyeler.com/calisma2/files/uploads/43337024341.pdfIn PDF document text
- http://daiichihousing.net/uploads/news_file/76217640865.pdfIn PDF document text
- http://parateam.cz/file/ronanagopafigazubi.pdfIn PDF document text
- https://chachachat.info/js/ckfinder/userfiles/files/14198802064.pdfIn PDF document text
- http://vattuxaydunghl.com/userfiles/file/telasewafawaruse.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_off0000b04e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB04E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c865.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC865 | 10372 bytes |
SHA-256: 9ceefdcaa2c78ba15fc3a1b756774d86c9197b5b039903037422fe85ed223aea |
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font_02_sfnt_off0000e005.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE005 | 15976 bytes |
SHA-256: dd46ed36b3d3510663e528b849e2cc1ae441e193e9356254972fbc4c31a312fd |
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