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 or disposable hosting, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm for SEO manipulation or to host malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://drafthe.ru/uplcv?utm_term=galaxy+s+gsmarena
- http://hosungtour.com/FileData/ckfinder/files/20210906_EA61B7C1DE86D723.pdf
- https://alariel.be/userfiles/file/1611509318.pdf
- http://architettomontanino.eu/userfiles/files/19262424089.pdf
- http://zssadkowice.pl/pliki/ludiladaz.pdf
- http://tensoinox.com/userfiles/files/27292651248.pdf
- http://quranday.org/userfiles/file/43967564550.pdf
- https://cncostruzioni.com/userfiles/file/37089176372.pdf
- https://aradmissions.com/ci/userfiles/files/tefokadez.pdf
- https://lee-trading.tw/archive/upload/files/wovul.pdf
- http://parkergeneralcontractors.net/userfiles/file/zorofunupudaxonigowuxoja.pdf
- http://eamenfaraz.com/cache/fck_files/file/barobopefijuromigutonan.pdf
- http://remont-elektro.eu/archiv/file/93818128679.pdf
- https://soyana.de/js/ckfinder/userfiles/files/jenikojoxugivasovuduxele.pdf
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/4a2f5f6ea4d07cb6b2d32f7b37450455/9866338240.pdf
- http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/16284877497.pdf
- https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c63af62b12---2850206559.pdf
- http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161319c7a85dac---93635475386.pdf
- https://emenu.hu/editor_up/lezulo.pdf
- https://cfacgroup.com/uploads/FCK_files/file/sonifixonoz.pdf
- https://llibreriaha.com/img/events/file/jerezuwewak.pdf
- http://unixsensor.com/uploads/files/202109120201338771.pdf
- http://dpsnowodworze.pl/userfiles/file/67812089639.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_off0000b260.bina48d9739d21905bbf76b4d11f80c1e47e3b2768f1c986759c954bb51e49f4e73 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB260 | 16876 bytes |
font_01_sfnt_off0000dd73.bin3aa16209ff2feb0aae7c06bdab7e0519583cf92d08d07feb30a07a104499cc4d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD73 | 10396 bytes |
font_02_sfnt_off0000f501.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF501 | 16792 bytes |
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