MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of embedded JavaScript and a large number of external links, many pointing to compromised CMS uploads or disposable hosting, strongly suggests a phishing or malware distribution attempt. The ML classifier also returned a high probability of maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://archism.ru/uplcv?utm_term=watch+never+let+me+go+online+free+123movies
- https://xosobacninh.vn/webroot/img/files/45293222336.pdf
- http://vishwkarmaenterprises.com/webroot/img/userfiles/files/mexaletoxazoreba.pdf
- https://webmenuplus.com/images/file/gutelunavejesivevuza.pdf
- http://kxnjl.com/userfiles/files/8070880765.pdf
- https://ww150004.linebot.net/upfile/files/20210914160736.pdf
- http://waetsukai.jp/system/ckfinder/userfiles/files/44948621657.pdf
- http://w-mill.jp/images/file/bawimojapilul.pdf
- http://tsg-edinstvo.ru/userfiles/file/romopokopesam.pdf
- https://adoz.cz/ckfinder/userfiles/files/85831300729.pdf
- http://mail.me.ntou.edu.tw/ckfinder/userfiles/files/20210909_221616.pdf
- http://tangiahoang.vn/Images_upload/files/jopuroforunesodemuv.pdf
- http://www.alfapilates.pl/upload/file/89888157360.pdf
- http://akademibt.com/resimler/files/21243048684.pdf
- https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/d9658665a28e5a0b2f86110b92d8ead1/58946901148.pdf
- http://61kidsclub.com/userfiles/file/tezafegin.pdf
- http://hzdsbg.cn/uploadfile/1631315971.pdf
- https://www.colegiodomus.com.br/js/ckfinder/userfiles/files/zogaso.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140b8fb2d6d7---jukowo.pdf
- http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec385698b5---deruzofufufo.pdf
- http://pc580.cn/upload_fck/file/2021-9-10/20210910045918506031.pdf
- https://7foro.exceltur.org/exceltur_nuevo/ckfinder/userfiles/files/damaduvekewewim.pdf
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/19db1d76eab58bfd56e284d2c0be7518/3895329276.pdf
- https://tkbhanna.com/ckfinder/userfiles/files/65997432113.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_off0000e431.bin2132abbcb4384ac9b8a8ea04d2b9b2544c1d870f292b3b73d67f1cb11a76c140 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE431 | 18380 bytes |
font_01_sfnt_off00011378.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11378 | 16792 bytes |
font_02_sfnt_off00012b8f.bin20872fe8e7e2f9516193f913c00c0dc0991bf9ad53a04cb8a99a80ea03f1671a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B8F | 11184 bytes |
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