MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to lure users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or malware distribution intent. No scripts were extracted, but the heuristic firings and URL analysis are sufficient to assess the attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://chcial.ru/uplcv?utm_term=virtual+machine+windows+10+android
- http://solyaris.pro/admin/ckfinder/userfiles/files/jerajuz.pdf
- http://nessium.fr/userfiles/file/6813998486.pdf
- http://knowleangling.co.uk/ckfinder/userfiles/files/15414924273.pdf
- https://flavio-tonon.it/public/file/volev.pdf
- https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a890f595dc---nasosoninomodup.pdf
- http://speakingaboutnetworking.com/ckfinder/userfiles/files/gikapebizovaxa.pdf
- https://chaletsuenodesol.de/files/fesozigefuparifosogev.pdf
- http://xn--80aafbanafwvcftiqfecrg2a.xn--p1ai/pict/file/11643976170.pdf
- http://pujcovnanaradi-tvarozna.cz/userfiles/files/20535122857.pdf
- http://tropo-design.com/ckfinder/userfiles/files/10114752695.pdf
- https://akilanews.com/ckfinder/userfiles/files/79870786942.pdf
- https://llbyggodesign.se/UserFiles/files/1692386184.pdf
- http://www.coverseg.com/uploads/ckfinder/files/baxobidijeku.pdf
- http://househouse.it/userfiles/files/78874617798.pdf
- https://hkbca.org/UploadFiles/file/20210920115302147.pdf
- http://xy-interior.com/uploads/files/202109050507049911.pdf
- http://hindustanadvancedsolution.com/t/tutorfirm/uploads/ck/files/71997560559.pdf
- https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/90d72d0e79a39839c4e322a963786874/25080004217.pdf
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/4be909f1fdf477df1c75cdbd048904b4/71141529710.pdf
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/f18badc5d0364096009ef047db8f6a9a/tadibakiwope.pdf
- https://vnjhanoi.com/upload/files/32538824436.pdf
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/703923771811724d1adb86530bee7764/dabix.pdf
- http://watdoenwevandaag.nl/upload/kogunefitegalibasexosuvab.pdf
- https://a-metal.e-giant.net/archive/file/files/pujakanimavisud.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_off0000d8a8.binb6a4084bb840a12d4510b706b1046778978446bf085772722dd6341c5bf4649b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8A8 | 10964 bytes |
font_01_sfnt_off0000f204.bin8c01bdfe27a5be2ffc91cf5e346fad367e44f72949d584752660ae3a41c42005 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF204 | 17212 bytes |
font_02_sfnt_off00011eb0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EB0 | 16792 bytes |
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