MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external PDF files, many hosted on disposable domains or potentially compromised WordPress sites, suggesting a link farm designed to distribute malware. The presence of a 'download button' heuristic further supports the lure-based attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
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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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://crysiq.ru/uplcv?utm_term=is+there+an+app+to+transfer+data+from+android+to+iphone
- https://campfun.myhost888.com/upload/ckeditor/files/9138034738.pdf
- https://lyubomiradineva.com/files/file/80823347646.pdf
- http://dnepropress.net/files/file/punedukusuzirunuxuzu.pdf
- http://naturestuff.nl/siteimages/file/46608143550.pdf
- http://totoumi.jp/upload/file/votubigagaxatebib.pdf
- https://kaskad-74.ru/images/uploads/wanusimek.pdf
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/3420e7991c6d59967418b289a12c4e80/kululopapage.pdf
- https://www.fangjin.org/ckfinder/userfiles/files/sabugozudol.pdf
- http://stauarchitetti.eu/userfiles/files/towakutanin.pdf
- http://smartdeal.pl/files/upload/files/muxigalobiwogalosemubutel.pdf
- http://syntra.pl/userfiles/file/54053034215.pdf
- http://worldsocialistpartyindia.org/ckfinder/userfiles/files/55301239897.pdf
- https://qualitygums.com/userfiles/file/94893621868.pdf
- https://hotelindigha.com/FCKeditor/file/95173784624.pdf
- http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/16284259183.pdf
- https://myreply.mobi/snappshott/editor//file/bapekegekegomilise.pdf
- https://ourlady-schools2.com/userfiles/files/zetotewanatimito.pdf
- http://nfrostov.ru/upload/files/tetuluzabi.pdf
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613496e1d9d10---matifawo.pdf
- https://franchiseharbor.com/files/files/56606071944.pdf
- http://altiro.nl/home/tjerk/file/71097283695.pdf
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/hos6lhurirs4ua2fbnckem8c53/40264185616.pdf
- http://jungvassar.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tonofujos.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_off0000d229.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD229 | 16792 bytes |
font_01_sfnt_off0000ea40.bin6d4e0a2ecd04701b998e48fff216a220c845bb37e4f286cda820c018ef80f7b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA40 | 10668 bytes |
font_02_sfnt_off00010279.binad0e822a70207a1ca6a30aac84c082ff83880884eb06774339c7c98c0a3ec70a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10279 | 17556 bytes |
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