MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded URLs, many of which point to potentially compromised websites or link farms, suggesting a phishing or malware distribution attempt. The 'SE_CALLBACK_LURE' heuristic indicates a callback phishing or tech-support scam pattern. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score strongly suggest malicious intent, likely involving the download of a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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=le+mise+en+scene
- http://aeklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nikumenedebuwejosi.pdf
- http://macierz-grodziec.org/files/file/xutizesapovo.pdf
- https://uzsienis.cvzona.lt/resources/img/files/41265718304.pdf
- https://autoradiator.mn/uploads/ckfinder/files/57208668377.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/cvd4omv6svr57tuig5vr1jn8h6/9574951158.pdf
- http://snft.ro/media/file/tivifiz.pdf
- https://irepairplus.nl/app/webroot/files/userfiles/files/zegokosumekesovunu.pdf
- https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/25690101119.pdf
- https://sintasyapi.com/img/userfiles/file/9261845775.pdf
- http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613e4004b9daf---wokudezagidifebafidusip.pdf
- https://we-plus.tw/ckfinder/userfiles/files/67196588196.pdf
- http://rigassprotes.lv/uploadz/file/vadazolevofagujido.pdf
- http://mbjarrahi.com/UploadedFiles/New/file/91518809012.pdf
- http://seoulsquare.com/userfiles/file/dobilo.pdf
- https://ristovski.mk/public_html/upload/userfiles/file/sedavitoliduvumew.pdf
- https://onlineadda.net/ckfinder/userfiles/files/45503986218.pdf
- https://szalkasszorutacskok.hu/app/webroot/files/content/files/90952844684.pdf
- http://bassonconsulting.mc/userfiles/file/41604267792.pdf
- https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613437e53a61a---tajetigib.pdf
- https://www.zolmedis.lt/ckfinder/userfiles/files/35985427914.pdf
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613825068d53a---fomadixomawem.pdf
- https://seikai.jp/free_images/files/76349644185.pdf
- http://nujhimachal.in/img/uploads/files/55251566186.pdf
- http://georgekoldun.com/var/upload/file/mesupunuposozenefe.pdf
- https://turkeyinsurance.info/images/file/47504912029.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_off0000cd1c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD1C | 16792 bytes |
font_01_sfnt_off0000e52e.binb56dc074244212c45410fdbb64dc6933823f1e4ec01ca0d0f66d9681fd59ce83 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE52E | 22992 bytes |
font_02_sfnt_off00011e23.bin88059f3e6fa2c3d6666198157ffea9f62f29db0e46fd73caeceb7e29eb233692 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E23 | 9820 bytes |
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