MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The presence of numerous external URIs, many hosted on compromised CMS uploads and disposable domains, suggests a link farm designed to redirect users to malicious content. The 'SE_DOWNLOAD_BUTTON' heuristic further indicates a lure to trick users into clicking these links. Although no scripts were explicitly extracted, the nature of the link farm and the overall detection profile strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://nomylo.ru/uplcv?utm_term=redmi+note+7+pro+custom+rom
- http://madiran-cruduparadis.fr/ckfinder/userfiles/files/10411608432.pdf
- http://studioiulianella.it/userfiles/files/jedenemogepapiferosob.pdf
- http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613b928c68157---78485417243.pdf
- https://2winit.com/Files/files/39462554713.pdf
- https://tavfelugyelet.megujuloenergiapark.hu/admin/ckfinder/userfiles/files/29008100343.pdf
- http://vyveva.eu/UserFiles/File/68561781257.pdf
- http://ahkkpcm.org/userfiles/tojoxokimozamesivamogotej.pdf
- https://kvzriu.org/images/file/27490295033.pdf
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139fc163fc73---45205992710.pdf
- http://bitite.lv/media/txt/122/file/wuzatoluxunetuzeb.pdf
- https://bodykneadstherapy.com.au/ckfinder/userfiles/files/dipexuxazadujefokozux.pdf
- https://concertwristband.com/resimler/files/78145145594.pdf
- http://tweedehandswikkelaar.nl/app/webroot/files/userfiles/files/bugirajigenapebobuw.pdf
- http://www.its-dph.cz/admin/fckeditor/editor/userfiles/file/getokotorijurerapajulu.pdf
- https://sma-dfgg.org/site/admin/file/38241304824.pdf
- http://studiofantino.it/userfiles/files/83977619831.pdf
- http://lovesenergy.nl/file/49852335116.pdf
- https://0922.sproname.com/files/userfiles/files/65170936895.pdf
- https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/3b1dec79dc68048f182e83c6b7490e1e/wixobirozujebut.pdf
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16139968917b0f---71147100645.pdf
- https://viessmannboilers.ca/fck_upload/file/kafogedililep.pdf
- http://land89.com/ckupload/files/52025972370.pdf
- http://studiobonvino.com/userfiles/files/tepibomixokixa.pdf
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/a7f80f267f34b46fd0ee63538a6c4f4a/23319202697.pdf
- https://bloc-immo.com/images/27452833696.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_off0000eb6a.binced29a3e020fc4135cc6df0a462c281648434ca239fef31881851d1dcca03482 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB6A | 10664 bytes |
font_01_sfnt_off000103e0.binceae9bcf32b1133e22aa22ed610103b7acdf11efb26386caed3f0e1c2284c51f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103E0 | 18536 bytes |
font_02_sfnt_off000133e0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133E0 | 16792 bytes |
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