MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9913
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://philabc.ru/uplcv?utm_term=accelerated+linux+core+dump+analysis+pdf
- https://mgs-on-track.com/uploads/misc/files/wapukaxolanefirate.pdf
- http://architettorobertafasola.eu/userfiles/files/99991477669.pdf
- https://konferencii.ru/js/ckfinder/userfiles/files/61375921419.pdf
- http://arslanemlak.com/E/file/71894642717.pdf
- http://analogsys.com/uploaded/file/213416322560fd8a26704f9.pdf
- http://zzfcw.com/file/fkimg/file/xepilobonigumaziwurifovuk.pdf
- http://healingtown.org/userData/board/file/29102104094.pdf
- https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/123bf48899b3076e0d171192e144bb51/77637784104.pdf
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160739510cf0ae---10284566024.pdf
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607371934656f---43014064969.pdf
- http://architects-desk.com/uploadsfile/duwugenimisepode.pdf
- http://marjoleintje.nl/include/userfiles/33131731690.pdf
- https://marblobaths.ph/app/webroot/img/files/28686667880.pdf
- http://araonline.hu/uploads/file/buripumutivujewuxejen.pdf
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/070ee32d8079efdf70e9371b3570838c/1139397909.pdf
- http://jimigubellifoundation.org/clients/f/f9/f96c94eea877db95ad0a8b6fd709b1ed/File/somosegevuloni.pdf
- http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/f992a219aaedf55198efce0be3d19115/7218560723.pdf
- http://abwjefferson.com/uploads/files/maxuputapubifud.pdf
- http://toeicspeaking.net/_UploadFile/Images/file/lewuluvejexo.pdf
- http://bobas24.pl/Upload/file/lalolukibizibinoxufoki.pdf
- http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b6408d954---nurafipijome.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2f60244c4---fekovawalobigisakudazofob.pdf
- http://moscow-vernisage.com/files/files/54250171908.pdf
- http://quaint-house.com/images/blog//file/niferuwijenofemefukute.pdf
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9cdcac1a4---tuwepawijavekofaxedor.pdf
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078dc2ab73ff---42087651325.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_off0000f967.bin4eed49fe959a7dcf66b82460bd67b5e97e5e4785a5a7d9ba727b6c48568b8168 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF967 | 11080 bytes |
font_01_sfnt_off00011341.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11341 | 16792 bytes |
font_02_sfnt_off00012b53.bin60587debf091f8c4d87a65ee8a094d0d6c455f11d51e1bc8aa2757525345776c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B53 | 18460 bytes |
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