MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to compromised CMS upload storage and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely serving as a phishing lure or a distribution point for further malware. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9941
Heuristics 6
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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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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://coretry.ru/uplcv?utm_term=texas+state+optical
- https://estoniapools.com/contents//files/pupoxiweg.pdf
- https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/8f34aa8388a6e69aaed247cf760fe1a7/32093748144.pdf
- https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/ae6bad619824cc8cc3658a1b8cf89859/8698842800.pdf
- http://ateliergermain.net/sites/default/files/file/xokepiduwexosuzajadix.pdf
- http://goref.ru/files/file/60502942322.pdf
- https://ddshower.com/ckfinder/userfiles/files/tuxipoxula.pdf
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160711dd0c7cf9---nakidineziki.pdf
- https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/ggqu2pratknpaohb62oh2dpojm/zufutadimavefuxuv.pdf
- https://andrejc.si/files/file/vamapek.pdf
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/d11cbb25a60af07314480038a6df2b64/kosobeduge.pdf
- http://fszhenjia.com/upfolder/e/files/20210626050510.pdf
- http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cde4f4072d---89589418302.pdf
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/6f4ade96a82ccd89716ffec48d0133a7/41021047103.pdf
- https://rugsinc.in/UserFiles/files/96072154003.pdf
- https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a54ee795a19---vuvobo.pdf
- https://ascinfratech.com/clientprojects/trading/file/mobitedumiwafojememar.pdf
- http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c183c841188---minikoji.pdf
- https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/46afcbf55e9ee7bd3ddc2a2c89201334/37691965675.pdf
- http://drapikowski.pl/uploaded/fck_files/file/govovunasilevaj.pdf
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/1tnda17u9nq5utglg4o2quf6lj/5426462211.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b664522d87a---98406046726.pdf
- http://bjsprt.com/uploadfile/file///2021052300322979.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000eb35.bin8fa4e880c5b5a21d09d46e8b6eae1e91f843d4658b560ea2488f3dc197fb314f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB35 | 10228 bytes |
font_01_sfnt_off00010258.bin7944b35aaeec55445d402e543b79e7fb147fd4c30b47b0c275376c2f03e0a85c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10258 | 17648 bytes |
font_02_sfnt_off00013094.bin9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13094 | 16092 bytes |
font_03_sfnt_off000145d9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x145D9 | 16792 bytes |
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