MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external URIs and links to compromised websites, suggesting a phishing or scam lure. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, but the presence of embedded URLs and the overall heuristic findings strongly indicate a malicious intent to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 https://queure.ru/uplcv?utm_term=how+to+see+private+instagram+stories
- https://maytinhdalat.vn/images/uploads/files/476405061.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16141ef04646ed---lasexukusoxibinodukevoba.pdf
- http://dnepropress.net/files/file/29636143258.pdf
- http://cayxaotamphan.net/userfiles/image/file/41611122535.pdf
- http://agisma.ru/files/pages/files/rufimiwusivun.pdf
- https://soi.icami.mx/ckfinder/userfiles/files/mukefe.pdf
- https://morabia.fi/images/file/kejirizugagifejav.pdf
- http://bolt.fo/public_html/userfiles/files/pesofofuwa.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b476ac8cdc---rurojadorotope.pdf
- http://tuhocxuatnhapkhau.com/uploads/ckfinder/files/pulezesetenikus.pdf
- https://alshaabcoop.com/userfiles/file/53332677688.pdf
- http://guojingmall.com/userfiles/file///17502603458.pdf
- https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/ae39135f6f2ab80aa67b905854519c5a/33194697873.pdf
- https://mobilieroccasion.fr/uploads/file/dagoxejevebarido.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/161414b710bbdb---xosikofuka.pdf
- http://holmeslawfirm-iowa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tofukepodatijetudu.pdf
- http://bangdinhphucat.com/quangbasanpham/app/webroot/upload/image/files/65836683744.pdf
- http://dichvutheapec.com/upload/FCK/file/vameko.pdf
- http://orderkai.com/uploads/files/12331132709.pdf
- http://antropolog.ru/userfiles/file/vizaxij.pdf
- http://riph.pl/userfiles/file/86300543296.pdf
- https://optimuselearningschool.aels.edu/learning/site/images/uploadfiles/wetazixigolaxejikupe.pdf
- http://www.zywawiara.pl/pliki/ribaveduvi.pdf
- http://diadiemvui.com/upload/files/15964545305.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d5f3.bin4e5e7afedede8bb3cddfc2aef024202c8f2935a4cfce86ff3222e403d6e1f2ae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5F3 | 17188 bytes |
font_01_sfnt_off000101b6.bin4c81ee54910902ee41e2973f43e1d8ea9d7c490d7df548d801ffbbb63b7f33d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101B6 | 10692 bytes |
font_02_sfnt_off00011a46.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A46 | 16792 bytes |
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