MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates the redirection to malicious URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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=letter+to+authorize+someone+on+your+behalf
- http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b61c06c428d---43106332732.pdf
- http://dedanskecasinoer.dk/userfiles/file/zaxewufozugusef.pdf
- http://jnnycc.org/userfiles/file/valibabasolixivenadawiwob.pdf
- http://ediljolli.com/userfiles/files/gevatunapid.pdf
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/ed1337c91835245a78e99390af19d416/7942564534.pdf
- http://transchem-tech.com/Uploadfiles/files/11163776184.pdf
- https://windsbs.biz/files/file/53724767188.pdf
- https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/19aa6a36c2785114d457f00902596ac7/xawazega.pdf
- http://asupuro.com/upload/save_image/files/70405640141.pdf
- https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16098dcb42a420---wowizuvevate.pdf
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bac81a1d94---gadufut.pdf
- http://nagakuratrading.com/js/upload/files/jagexolajep.pdf
- https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/f29b66b5fc4948b3f964a6757f899aac/82315741981.pdf
- https://ficsllc.com/wp-content/plugins/super-forms/uploads/php/files/m9mopotvb4cqtvk6fsjl03chnp/14444008191.pdf
- http://piqiso.ru/userfiles/file/kodewoko.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9921705da4---37648152057.pdf
- https://www.cosanuesa.com/componentes/editor/ckfinder/userfiles/files/widoxata.pdf
- https://petala.gr/userfiles/file/jikuwopalujegilinorav.pdf
- http://anvlaw.com/userfiles/file/33242894942.pdf
- https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ac696eeb545---sodowerol.pdf
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/161099c66c1ef1---witexakuvow.pdf
- http://74ahs.com/clients/2/2a/2a132ee8da0778863662fd4b1fa251ed/File/22020621888.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_off0000db6b.bind07b82e3630c2a611da95ce2d89c4ff74a6d8496a8319aba6bf703575bb1c6ae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB6B | 10848 bytes |
font_01_sfnt_off0000f454.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF454 | 16792 bytes |
font_02_sfnt_off00010c66.bin3b4753c219428c8ee1bc2c50ea9e3a17149ee2bf1377f6ed353ec49d5175b751 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C66 | 17108 bytes |
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