MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm or SEO poisoning tactic. The presence of a 'download' button lure and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a malicious intent to trick users into downloading further malware. While no scripts were directly extracted, the overall structure and heuristic firings point towards a phishing or downloader campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://synerhu.ru/uplcv?utm_term=download+novel+alnira
- https://www.leasing.net.in/ckfinder/userfiles/files/votijib.pdf
- https://albertoangel.sinecsas.com/ckfinder/userfiles/files/79248477169.pdf
- https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16136a06a1e9d4---1140625538.pdf
- https://www.theknowledgeonline.com/files/lib/ckfinder/userfiles/files/jirebunimipijag.pdf
- http://xn--or3bi2da319p.com/upload/fckeditor/file/potob.pdf
- http://eko-gospodarstwo.eu/files/file/72401387221.pdf
- https://motoquadro.de/userfiles/file/61657859482.pdf
- https://vrindaindia.com/php/joseph/uploads/file/8723570447.pdf
- https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/161313c42a3565---rokakirosusuvozozimopir.pdf
- http://morakothotel.com/file_media/file_image/file/74050898233.pdf
- https://casaalu.com/luutru/files/71569735770.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/d02da5c5e7b44d97869baa9e0c1f3586/94127856793.pdf
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/161329403dae60---28662836791.pdf
- http://pushgroup.lv/userfiles/files/dotinugevazenabatem.pdf
- http://precisao.org/files/files/19623662896.pdf
- http://mintaialuminum.com/d/files/13782180137.pdf
- http://rideco.hu/upload/file/kabevopusufizapadivow.pdf
- http://sapientgenerator.ru/files/userfiles/files/78954082457.pdf
- http://hvezda-pardubice.cz/files/file/40507667061.pdf
- http://kooijobs.in/ckfinder/userfiles/files/77082142674.pdf
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/161323db01448c---tubiwa.pdf
- http://juentai.com/userfiles/files/70495472181.pdf
- http://www.ecostroyservis.ru/File/vewojejodonikebipi.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_off0000e0b7.bind12a326d81780a1d158bd894b2fa4f54b201d3415eb7a6dcc7848753a96ddbe3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0B7 | 18620 bytes |
font_01_sfnt_off00011188.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11188 | 16792 bytes |
font_02_sfnt_off0001299f.binf1b09238c9da34c5d40267a067c03568eb17d3e12a6aa88cb84b78cc76aba5f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1299F | 10128 bytes |
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