MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term' in one URL further indicates a phishing or spamming campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 6
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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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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://pistant.ru/uplcv?utm_term=mortal+kombat+x+mod+download
- http://nbmounts.com/userfiles/file/1631528933.pdf
- http://montaze.org/democms/userfiles/file/31316762134.pdf
- https://stpatswatertown.org/ckfinder/userfiles/files/28311504577.pdf
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f2b209ace5---xijugagosem.pdf
- http://modnyi-buket.ru/uploads/files/32424957939.pdf
- https://avflash.nl/upload/files/rubir.pdf
- http://cathugo-catamarans.de/res/wysiwyg/file/gerewuso.pdf
- http://letsfinal.com/userfiles/file/53191209364.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/rk5uabbucm32bvghhg6hh2e5is/24326514907.pdf
- https://hgb.se/filer/file/5992400823.pdf
- http://xn--80aafkatcapceshpicpg3h.xn--p1ai/pict/file/buzojotenowewujaf.pdf
- http://satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/gumabasivebaw.pdf
- http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/5690479464.pdf
- http://sendedianqi.com/upload_fck/file/2021-9-16/20210916022155707053.pdf
- http://katour.ru/admin/ckfinder/userfiles/files/jevoliwatinuzobegi.pdf
- https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/9b9ac3cec62e7db16164af594237e6ac/23580635736.pdf
- http://hotelbasantresidency.com/uploads/84464958580.pdf
- http://smm-mm.com/uploads/news_file/dikapiruxubofowupige.pdf
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16141e6177b00b---55171047749.pdf
- https://ta-taiwan.com/app/webroot/userfiles/files/poparasimesajop.pdf
- http://huile-de-nigelle.info/userfiles/file/35488479970.pdf
- http://giustizianuova.it/userfiles/file/25540517206.pdf
- http://astorandblack.net/emailer/userfiles/file/ganafigof.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_off0000c4f7.bina033456682fe335a4fc7e3abfc6e6770fd44d5f7f91012be1e182b1d166b852b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4F7 | 10428 bytes |
font_01_sfnt_off0000dca4.binbf9a9df59a4d3814c3a6943dd0a4803b26c15b02830e55c7c29eb2570d054ca0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCA4 | 16656 bytes |
font_02_sfnt_off00010793.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10793 | 16792 bytes |
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