MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded JavaScript and a large number of external links, many of which point to compromised websites or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded JavaScript (T1059.007) indicates an attempt to execute code within the user's browser or PDF reader.
Machine Learning
- Nyx PDF Classifier malicious score 0.9950
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://queure.ru/uplcv?utm_term=itextsharp+sign+pdf
- http://zhouzhuanx.com/v15/Upload/file/20219741883287.pdf
- https://highfieldhousehotel.net/nbloom/fckuploads/file/90697617512.pdf
- http://vimar.ua/userfiles/files/65801961649.pdf
- http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/4e07407c30e40b642487c51835b7e9a5/nuxakuwajijegisa.pdf
- http://thebookmarkcafe.com/uploads/files/dovowitetimugesuwetis.pdf
- http://naturalwonders.com/uploads/files/97150529294.pdf
- https://www.auto-ecole-acm.com/ckfinder/userfiles/files/febopugenowifemegagu.pdf
- http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/161343f960620c---68478951818.pdf
- http://csc028.com/userfiles/file/20210903012413_69lveo.pdf
- http://5m-tti.com/uploads/image/files/12170880031.pdf
- http://lisaarkinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wunujewe.pdf
- http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/xakinikum.pdf
- http://lsmtrontractor.com/upfiles/file/20210908005255.pdf
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/161394285d65a2---26652246719.pdf
- http://tecs4.com/intranet/ckfinder/userfiles/files/tegutigolepub.pdf
- http://architettoannalisatinelli.it/userfiles/files/tuwabogomopewumevirosej.pdf
- http://quick-thailand.com/images/uploads/file/jedoje.pdf
- https://www.champagne-cornevin.fr/ckfinder/userfiles/files/17065701876.pdf
- http://mamtaniketan.com/userfiles/file/suradaxadazisawaridopin.pdf
- https://www.pollackmihalyiskola.hu/ckfinder/userfiles/files/segazobijetaguvunuveju.pdf
- http://www.impactit.in/ckfinder/userfiles/files/26486378093.pdf
- https://royal-art.pl/uploads/userfiles/files/35311032223.pdf
- https://morabia.fi/images/file/jarawejunoxigisuxiso.pdf
- https://stonebuild.bg/f/uploads/files/1192603379.pdf
- http://architettotamborra.eu/userfiles/files/bajexil.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_off0000b17b.bincb4dde3fc0a50bdbbd96e6234f9bb8d43936a1bca135660fdb90ea59cccbdb4d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB17B | 10664 bytes |
font_01_sfnt_off0000c9ab.bind822c6b3b4c870602009877326dac6c4c4852e11311916fc95da3c3ce421c628 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC9AB | 14400 bytes |
font_02_sfnt_off0000ee48.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE48 | 16792 bytes |
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