MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised WordPress upload storage or disposable hosting. These heuristics, combined with ClamAV detection and ML classification, strongly suggest a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the redirection or download of malicious payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 7
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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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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://wastran.ru/uplcv?utm_term=android+marshmallow+update
- http://hiredriver.com/uploads/assets/files/letiti.pdf
- http://skolicka.eu/foto/images/file/nifasiwogasokijuraxumobuj.pdf
- http://tamtamphat.com/upload/files/xavixelafote.pdf
- https://sushixusa.com/userfiles/files/libibunepam.pdf
- http://safires.cz/ckfinder/userfiles/files/satilatufumax.pdf
- http://tovicetour.com/FileData/ckfinder/files/20210913_2B68E78E31F87596.pdf
- https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/a8ca1dc9f9b15fe6ab6b65e15ea5441d/34494894975.pdf
- http://luatsugiadinhviet.com/upload/ck/files/wusikok.pdf
- http://allier.proximeo.com/ckfinder/userfiles/files/45944433800.pdf
- http://greenld.com/userfiles/mojipojadino.pdf
- http://kirilmazbardak.com/userfiles/file/gazavumazogasodopurek.pdf
- http://lindendirect.com/ckfinder/userfiles/files/94985778642.pdf
- http://elrey-uslugi.ru/media/file/maviwimivigupunebigaxit.pdf
- https://aronabritcan.com/userfiles/file/85905718003.pdf
- http://www.erealitysolutions.com/tennisontario/assets/appsadmin/js/ckfinder/userfiles/files/wawexodasajajaliwa.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161386a3517875---vikumexofezemere.pdf
- http://iphysiology.ru/upload/joxowikotib.pdf
- http://a-pluset.com/userfiles/zakilemixa.pdf
- http://tea-ra.com/user_data/upload/save_image/files/87651854997.pdf
- http://fotofolliasanlazzaro.it/userfiles/files/87332846474.pdf
- https://kawanmto.com/contents/files/6033590946.pdf
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130c408477c6---duviviwetubumo.pdf
- https://nasco-ye.com/uploads/file/6084713753.pdf
- https://virtualpulse.eu/UserFiles/file/momubedanoximumareguto.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e24dd8b312---91109112516.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_off0000b34c.bin0d3fc78373a08e01dcb3367de3e3e2c6750fee47d05c9a5144412ba3fb0c1f6a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB34C | 14568 bytes |
font_01_sfnt_off0000d7da.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7DA | 16792 bytes |
font_02_sfnt_off0000eff1.bin809c26d27ca9aa9245d8481aebb64a2679140b54bc82f0caa171f737972bdc11 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFF1 | 10824 bytes |
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