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 redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9833
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://krisoc.ru/uplcv?utm_term=pdf+to+ebook+converter+free
- http://fabiocaronearchitetto.com/userfiles/files/xamajesixuzewite.pdf
- http://narnivet.com/userfiles/files/lusogaw.pdf
- http://immobilier-valence-agen.com/userfiles/file/73103298027.pdf
- https://mwasafat.com/uploads/files/96293949037.pdf
- https://digicpictures.com/downloads/11126794367.pdf
- https://wedding-photos.cz/userfiles/file/26112179415.pdf
- http://residenceraffaellotorino.com/userfiles/files/1048056788.pdf
- https://minervatech.work/js/ckfinder/userfiles/files/2928097707.pdf
- https://paramourpourbebe.bettygagne.ca/userfiles/file/jufexexuku.pdf
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139fee9c7a68---posaduvarex.pdf
- https://cuacuonbentre.com/upload/files/38358684760.pdf
- http://lightningriskassessment.com/ci/userfiles/files/76494424929.pdf
- http://mictrogiang.com/userfiles/files/zipitej.pdf
- https://ivanamihic.com/files/zekemavisefemokikamigi.pdf
- https://nepaltrekkinginhimalaya.com/assets/userfiles/files/xubuvokebozogikizilit.pdf
- https://zlatartopalovic.rs/files/79511156326.pdf
- https://acryl-bg.com/userfiles/file/dazagino.pdf
- http://worldofpacifiers.com/editor_uploads/system/files/piwetokumifi.pdf
- http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/df7m8ljj5fic7cirmr3h61hul6/21193623286.pdf
- https://kasihpaham.com/contents/files/82273515370.pdf
- http://abwninemile.com/uploads/files/vonidij.pdf
- https://shiprapublication.com/uniformkontakt/userfiles/image/files/pisowarelexono.pdf
- http://cosmoscm.com/contents/files/25000110444.pdf
- http://unite-chem.cn/upload/files/40858704968.pdf
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/ju70q2o4t762oo9nk8s97kad21/jedujerapaxebow.pdf
- https://kurtoglumob.com/upload/file/tufeburexadazi.pdf
- http://irpuyesh.com/cache/fck_files/file/zonusuv.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_off0000d57a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD57A | 16792 bytes |
font_01_sfnt_off0000ed91.binae5a573e535347694a3ab1bc8a62939fe692387e23668338af751aba3500ab96 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED91 | 10300 bytes |
font_02_sfnt_off000104e7.bin13474c70da9d80fd7c57e3043ef2a382b57544048c5f0683a5d6c9c4c9e99a23 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104E7 | 16864 bytes |
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