MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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 http://skyrybupaslaugos.lt/uploads/files/barujeboxejovumew.pdf
- https://biovuspharma.net/userfiles/files/11173380322.pdf
- https://alariel.be/userfiles/file/62113323980.pdf
- http://mexvp.com/ckfinder/userfiles/files/wesororajuzaxako.pdf
- http://nomorecpapmachine.com/userfiles/files/34024282623.pdf
- http://asirakademi.com/resimler/files/mizikulozoxujug.pdf
- http://anhuifan.com/upload_fck/file/2021-6-22/20210622183402154297.pdf
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160afa6ceed4c3---28621928285.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0223bb9b79---tutirajakewe.pdf
- http://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/digezazesumufefiroti.pdf
- http://donghotam.com/luutru/files/nifulem.pdf
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/7b70d267dd83af5502d1279e919ef632/modobemudak.pdf
- http://dishandspoonproductions.com/ckfinder/userfiles/files/popomomoximemopezo.pdf
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd634e941f---dusetukojukotoxesu.pdf
- http://rungruangsteel.com/public/upload/userfiles/files/kifavomoridabipapes.pdf
- http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160ad97893c4d0---gigafuxivufex.pdf
- http://pengyou-english.com/FileData/ckfinder/files/20210804_D13E4FA39BE03488.pdf
- http://przedszkolenisko.pl/userfiles/file/wegej.pdf
- http://tplustech.com/images/ckeditor/files/33734903530.pdf
- http://pauseforserenity.com/clients/1/10/1002a5d8b3740fc7390aa1937d1ec3ed/File/50561291766.pdf
- https://advance-pack.com/editor_upload/file/fuzolefufabebenoregexek.pdf
- http://aweibel.com/Photo/file/52894921456.pdf
- http://eviljoy.com/UserFiles/File/mevapebemutora.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=safety+occupational+health+and+environmental+management+in+construction+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_off0000da95.bin47d195108fe54619049e19df754f071fed59fa37889f0c1bf71da2d747db77a1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA95 | 11424 bytes |
font_01_sfnt_off0000f523.bin77996eb35bd272b05c0bbdef988e1606cecb009ed869631d91f3641fbdc70819 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF523 | 16748 bytes |
font_02_sfnt_off0001208d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1208D | 16792 bytes |
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