MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1190 Exploit Public-Facing Application
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites hosting PDF files, suggesting a link farm or phishing lure. One URL, 'https://chcial.ru/uplcv?utm_term=clash+royale+latest+apk', appears to be a redirector for potentially malicious content. The document body is heavily obfuscated and unreadable, but the presence of these links and the overall heuristic firings indicate a malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://chcial.ru/uplcv?utm_term=clash+royale+latest+apk
- https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/659f751e0d25abefd0ace4719e06548a/8383928409.pdf
- https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b759a77f9ef---revuzuponekirewiz.pdf
- http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a745819ffc2---86513476291.pdf
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e2df4eb240---wasimamamomotak.pdf
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608cfc26045a0---78312788157.pdf
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7a01da97bf---73869408957.pdf
- https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3b94286a8578edde88ed44653684083a/57466900585.pdf
- https://mama-light.net/business_school/uploads/file/2370101297.pdf
- http://twxcd.com/img-aim/files/39689566168.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160867e8db0de4---tetemefimepi.pdf
- http://guides2alpes.fr/uploads/file/jekepopabij.pdf
- https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/d3de26ad4454fdded86ecb39e41bc2cb/98855106781.pdf
- http://www.startservis.sk/novy/ckfinder/userfiles/files/9936000362.pdf
- https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/e5cba0f63f517c01e3f7a24e8e6b6779/63206991132.pdf
- https://amatnieks.com/pictures/image/13518139216.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ed3d.bind1bb9f0ab8acb8538bf79b0838be41dfd7517c180f7e9e7be6d6c7499440a560 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED3D | 4976 bytes |
font_01_sfnt_off0000fe1b.binae981b8d640f9bb9f8f0f3b9d8446fa56496c4ec822bfdebec7e417b228f9e90 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE1B | 3876 bytes |
font_02_sfnt_off00010d15.bin581f3f28a751ea355d247b47b36ab2c3e37489462e8669811fd6aafd5ec6e286 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D15 | 22532 bytes |
font_03_sfnt_off00014042.bin52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14042 | 16036 bytes |
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