MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on disposable domains or compromised CMS uploads, indicating a link farm designed to redirect users. Heuristics for urgency lures and download buttons suggest a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to download a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 8
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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=123movies+online+app
- http://wksystems.net/HotelEstimator/userfiles/file/gudifizezuweponitaneg.pdf
- https://cqhuaan.myhost360.cn/upload/files/09-16-02-31-43-58.pdf
- http://zkojicin.cz/userfiles/file/demifolukaveritoxuk.pdf
- http://fobosgrunt.ru/files/ckfinder/files/7350291398.pdf
- http://medicaldistri.com/ckfinder_files/files/kotadakumobomuseni.pdf
- http://chnli.tw/CKEdit/upload/files/timupotiwexi.pdf
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/161354c8a7ff34---75424391563.pdf
- http://rld-carbon.ru/file/jexadujozafigojavit.pdf
- http://colantuono.it/userfiles/files/30266724884.pdf
- https://birotex.rs/images/files/masirijetifaluv.pdf
- http://meruzhankhachatryan.com/app/webroot/files/file/vofewuw.pdf
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/71a116f9fe8555383196e283ae0f7c90/nalagilezuxe.pdf
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613afad164ce5---mibet.pdf
- https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/f3e90d754d23d95645d29b0818e7287e/12255584083.pdf
- http://firewheels.pe/userfiles/file/3389151076.pdf
- http://s4l.vn/storage/ckfinder/files/naruma.pdf
- http://mascotdd.com/file_media/file_image/file/27756193326.pdf
- http://wagnerpc.com/userfiles/files/53305841264.pdf
- http://anpharma.net/upload/files/14727544353.pdf
- https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3b5c4d061---figupadoxojopisizel.pdf
- http://silverspringabw.com/uploads/files/rizefabazupifun.pdf
- http://kengosushionlineorder.com/uploads/files/kisidunavesagelub.pdf
- https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/d34b1d6dffe0908f7b326b4ddfac07cd/mejujemebukeda.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_off0000c82b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC82B | 16792 bytes |
font_01_sfnt_off0000e03d.binbd35dc29b582c8d4d1aba48308234802a92d77c25fa38872e614487b50a2fd4b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE03D | 17692 bytes |
font_02_sfnt_off00010e37.binda5fccdcbd9421bf58e51b95d12e16c57de249c246bb1b50bbc75cb32e53ebba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E37 | 10528 bytes |
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