MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, directing users to various compromised websites that host further PDF files, likely as part of a phishing or malware distribution scheme. The presence of multiple external URIs and link farm heuristics indicates an attempt to obscure the ultimate malicious destination.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://crysiq.ru/uplcv?utm_term=free+download+fifty+shades+of+grey+as+told+by+christian
- https://haps.company/wp-content/plugins/super-forms/uploads/php/files/3cb608cf4dde57d698572553b5c12f00/36969975365.pdf
- http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/526fl00hia2n3fd9c2qd01aps5/mefezujufubodoraselek.pdf
- http://laulumaja.fi/ckfinder/userfiles/files/zowenujasuxevawo.pdf
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ecb80c0a57---76951984274.pdf
- http://redeyeldn.com/userfiles/file/gidakowagafilivejixexatum.pdf
- http://luckdidea.com/ckfinder/images_store/files/34935560249.pdf
- http://soundspace.eu/Upload/file/nufenavosuxulinuz.pdf
- http://whuntex.ru/userfiles/file/58334753109.pdf
- https://prestinireedcorp.com/userfiles/files/73923292306.pdf
- https://baxsporthorses.nl/userfiles/file/27012684803.pdf
- https://www.temtechnologies.fr/ckfinder/userfiles/files/fedemejofasinejeten.pdf
- http://cathugo-yachts.de/res/wysiwyg/file/45929947249.pdf
- https://atcotourismtravel.com/userfiles/file/jepolojimafupiba.pdf
- https://mpksieradz.pl/upload/file/96826789676.pdf
- http://felixefontesadvogados.com.br/ckfinder/userfiles/files/50796290967.pdf
- https://kalashad.com/userfiles/file/soxozupubufagesuvawibileb.pdf
- https://careersourcechipola.com/files/public/79279631879.pdf
- http://cokhixnktientien.com/Images_upload/files/womigafapa.pdf
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/161406a02c637e---53711299622.pdf
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613694b87a992---sajizawatikedudenaw.pdf
- https://www.bramfordgc.co.uk/ckfinder/userfiles/files/wumulinoxubiselitir.pdf
- http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161405458a89bc---94204319876.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_off0000db8d.bine7f56e100c0d3a470c4e7740993500fb1de708ce9dbb55ab079711bbe5ba4a77 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB8D | 11072 bytes |
font_01_sfnt_off0000f527.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF527 | 16792 bytes |
font_02_sfnt_off00010d39.bin26881ec70549071702894ea0a5609ff5af7b439ca98ccb6b1c5d1648bca067e5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D39 | 19432 bytes |
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