MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. The document contains a large number of embedded URLs, many pointing to compromised WordPress sites and other disposable hosting, suggesting it functions as a link farm. The presence of 'utm_term' parameters in some URLs indicates a potential phishing or spam campaign aimed at driving traffic to malicious content. No scripts were extracted, but the overall structure and URL distribution strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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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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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://infrive.ru/uplcv?utm_term=lord+give+my+family+strength
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/3b04a50e097f3176a96e67c5c262310d/lutaruwomerukosa.pdf
- http://exms.fr/sites/default/files/file/69059235771.pdf
- http://xn----7sbbgprpk7biiq.xn--p1ai/admin/ckfinder/userfiles/files/busikowezavadegamezijaj.pdf
- http://gruppocinofilomarsalese.com/userfiles/files/74030914161.pdf
- https://hsse.hssanesteban.cl/files/74734199947.pdf
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1613261304d194---poxaxomave.pdf
- http://ssaisarang.com/ckfinder/userfiles/files/buboratuvufenenubut.pdf
- http://westhollywood.ilovepokebar.com/uploads/files/domijililiv.pdf
- http://ozcetinler.com/userfiles/file/48807065694.pdf
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614c0e6f6b07b---45701821281.pdf
- https://100tmt.com/uploadimage/files/20210924094455.pdf
- http://marchmont.ru/imgs/file/vaxowuvo.pdf
- http://gmicropilotes.com/uploads/files/lukuto.pdf
- https://nurdagihaber.com/resimler/files/93971941217.pdf
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/81da95ed279eda3552de2cbeca715e9c/jilarulodezavilefiv.pdf
- https://camphacement.vn/upload/files/34678125063.pdf
- http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/sirigodoxisedifapejufide.pdf
- https://stl-log.com/htdocs/cljr/data/files/zumuwovorejo.pdf
- http://architettogherardi.eu/userfiles/files/36159139250.pdf
- http://l-max.ru/userfiles/file/3945158919.pdf
- http://aucoindeshalles.com/menu/file/rigunuriw.pdf
- https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/a18d7b0a291c8aad3b4071c55de3f4e7/laxixagilijotom.pdf
- https://hometutorsdelhi.com/userfiles/files/46789352499.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_off0000aecf.bine2dc64c45f87225494e9504d60d2a56a23bb14dcb241d713e01a687761acd9e6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAECF | 15280 bytes |
font_01_sfnt_off0000d559.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD559 | 16792 bytes |
font_02_sfnt_off0000ed70.bin1d81595276b06744448ce2d10c0b025f4288d47903eed0c5171fe7edf0559c7b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED70 | 10936 bytes |
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