MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. It contains a link farm pointing to numerous URLs, many hosted on compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics strongly indicate an attempt to lure users to external malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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=anna+and+elsa+pictures+to+color
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/9a5f335293d4cdfd307b6e2175005e07/58376938734.pdf
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/p31ajg0u0lh7dm003p7g2bm48j/razedubugexokir.pdf
- http://aliceinformaticasrl.com/user/pages/lexate.pdf
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c04f72228ea---68601964595.pdf
- http://akcjonariusz.com/UserFiles/file/32679779063.pdf
- http://aceonlinementors.com/userfiles/file/71934667364.pdf
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/b21a5a95980246c7be0abb9f9be87b8c/famowasomowavupufiba.pdf
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b01c8e95a41---19599299452.pdf
- https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/160720530ebf65---67917770629.pdf
- http://eventcompany.org/clients/e/e3/e30ef11cf4efe639fe6592aa37b9cb94/File/ronujexukatisidegudefevap.pdf
- http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/7440f5349206ed34caaf6ca2d687bf16/52083227814.pdf
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609aca4ba34b7---21421316138.pdf
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/731b30e07eef7ac259e5207d067bb772/65248124839.pdf
- http://sushi-belovo.ru/files/32231604496.pdf
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/ndi2k6a97uj3td1ajup6blb0dc/pesisirapuzigujeg.pdf
- https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/790f50fab0d40e68bd350b019a31f85b/89253603187.pdf
- http://ateliergermain.net/sites/default/files/file/33771168795.pdf
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/acuobrfq64nbjq8abgmc6m2uhp/54499946925.pdf
- http://wksystems.net/HotelEstimator/userfiles/file/gokuxatilulutugixovawide.pdf
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608442d798652---48693781615.pdf
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ca7b618dd---veguzajulo.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_off0000ceca.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCECA | 16792 bytes |
font_01_sfnt_off0000e6dc.bin448558f99bee4b3bb712079d962aed788859eb87c93dba0439e6fca27b935f08 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6DC | 19084 bytes |
font_02_sfnt_off000116ec.bin59a2016c67b390a79ed34ec877b5ff7e229ffa59d5d25eb61b735ba97dd4d775 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116EC | 10588 bytes |
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