MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains multiple heuristics indicating malicious intent, including ML classification, a link farm on compromised CMS uploads, and a lure for password-protected archives. The presence of a visual download button further supports the phishing lure. The document's structure and embedded URLs suggest it is designed to trick users into downloading a secondary payload, likely a trojan as detected by ClamAV.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
Heuristics 8
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://infrive.ru/uplcv?utm_term=dream+league+soccer+19+champions+league
- https://locktactyuma.com/ckfinder/userfiles/files/68397785990.pdf
- http://fcgo.tw/uploadpic/files/69263535139.pdf
- http://kapelski.pl/userfiles/file/bekir.pdf
- https://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/4192042466.pdf
- http://yushendesign.com/images_fck/file/1631828004.pdf
- http://rapet.hu/files/pomego.pdf
- https://gospel-streams.com/asset/ckfinder/userfiles/files/rositifadiroviwefem.pdf
- http://marthomaiticherukole.com/userfiles/file/nitofoleboxi.pdf
- https://jimsdelibrookhaven.com/demo/jimsdeli/admin/userfilesfile/povifurepi.pdf
- https://pamukoglu.com/userfiles/file/getilusepodibalob.pdf
- http://krakow4you.pl/krakow/files/3671217541.pdf
- https://www.indoorclub-informa.com/boletines/img/file/jowiguvaxozorebema.pdf
- http://yokosohk.com/files/fckfiles/file/xelex.pdf
- http://ros.by/ckfinder/userfiles/files/kitufevebezulonewixigovin.pdf
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133dff8a7ba5---40726769736.pdf
- https://svenjakretschmer.com/ckfinder/userfiles/files/juwobilitosefa.pdf
- http://skiflogistics.ru/userfiles/file/xemezakeg.pdf
- http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139175cad3e9---13762476010.pdf
- http://canyonmeadows.org/userimages/70081828284.pdf
- https://sjamsul-hidajat.id/ck_uploads/uploads/files/juzafuli.pdf
- http://morard-mcf.fr/data/Files/tezerukefosapuroniku.pdf
- https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/fc495e239ae0f7dbf776e5400d7a45a7/lozusolojerabi.pdf
- http://starcity-vinhomes.vn/app/webroot/img/files/kezusabi.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e566.bin723f03c31d3b6b9678c7e3a57f175ca62c9b763b8d2ac482dd11ea551ce494f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE566 | 22700 bytes |
font_01_sfnt_off00011d1d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D1D | 16792 bytes |
font_02_sfnt_off0001352e.binfddcbe21bdf9fb2753729b4ab5b26d7a3fbb01e3fe51d41ab0725360e25c189d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1352E | 16244 bytes |
font_03_sfnt_off00014b1d.bin9b0d62e762328b6b4569612d716ae8b5a07e1c346383deba715af29bcd808b8b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B1D | 11044 bytes |
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