MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. The primary purpose appears to be directing users to external sites, likely for phishing or to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9969
Heuristics 7
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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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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://synerhu.ru/uplcv?utm_term=determinantes+de+saude+pdf
- https://capitalsyndic.com/userfiles/file/xakupobox.pdf
- http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bca1a6de661---38832994860.pdf
- http://netmode.net/app/webroot/uploads/files/31209326599.pdf
- http://taketty.xyz/js/ckfinder/userfiles/files/57260882452.pdf
- https://careersourceokaloosawalton.com/files/public/dedevesikojobaworujog.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16081a599cc71a---17806464990.pdf
- http://apsencollege.org/test/fckeditor/file/ludigukuv.pdf
- https://argentinaproduct.com/ckfinder/userfiles/files/bakorenutek.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e788cd667---7379213715.pdf
- http://oldtimerclub-thueringerberg.at/images/file/nikugoruboxugunogefo.pdf
- https://mattress-leader.com/media/41585211109.pdf
- http://bukhatirhomes.com/userfiles/file/vobabanamojibitiwopo.pdf
- http://merlegdoktor.hu/tmp/39727839298.pdf
- https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/619e15d811aabc920e1b43ea52229d33/87073373805.pdf
- http://africalegal.nl/userfiles/file/matetanuz.pdf
- https://ambient-interier.cz/files/files/41873368873.pdf
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adc758a5c2c---situbukebozeleli.pdf
- http://antansconstructions.com/ckfinder/userfiles/files/76380840198.pdf
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/kk2o6s28th8rk4c3jtk5cu9idl/45991652670.pdf
- https://bestofbucerias.com/upload/file/vufifal.pdf
- https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/81759b7b516736dc13d45c8bbd83a4b4/18281154275.pdf
- http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871cfe778d1---97017524480.pdf
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/299d5b788df6799cb2025ecccf3e0e99/nabumupiridaruteri.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_off00010743.bin64007f328473146351e5fcf047d2817c8848b7e547f247ba4148cdb0a0c7c7b1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10743 | 21496 bytes |
font_01_sfnt_off00013cd7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CD7 | 16792 bytes |
font_02_sfnt_off000154ee.bin1ee160769002b0391347a92874e949a15c360933e15d2276abd25960ff63d782 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x154EE | 10592 bytes |
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