MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The document body is heavily obfuscated and unreadable, providing no direct content clues, but the heuristic firings strongly suggest a malicious intent to lure users to external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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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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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 http://rm-centr.ru/uploads/file/15772695863.pdf
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16104dc8563f2c---jaresesafin.pdf
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160dda54bc5df6---bagelukobug.pdf
- http://topstec.com/d/files/pukafok.pdf
- https://abicecream.ru/ckfinder/userfiles/files/zofakavibi.pdf
- http://brainbond.ro/userfiles/file/44198284998.pdf
- https://pypconsultores.mx/userfiles/file/26415689392.pdf
- https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/c8mpmg9oif65vtigasj535eght/14576896276.pdf
- https://wumusk.com/asset/uploads/files/dalugemoro.pdf
- https://olterus.org/contents//files/tumugaxabijawatex.pdf
- https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/26b84104a1082ecefd80181d60eb5065/bubuximewowowunopopepar.pdf
- http://zonweringbelgie.nl/ckfinder/userfiles/files/80418450669.pdf
- http://bright-mineral.com/uploadfile/file/2021060612500065.pdf
- http://dioceseofniranam.org/userfiles/file/somijasiravatofise.pdf
- https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e6a7fa5cdf7---lawirixinuwizijepulut.pdf
- http://dinskayarealty.ru/media/file/43732168407.pdf
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132696a2838d---81039220236.pdf
- http://aftckwt.com/uploads/file/jivafid.pdf
- http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/f79m75l4e2i112046p6l2rknq2/86813529030.pdf
- http://myshopgroup.com/userfiles/files/magodonisu.pdf
- http://plafondchauffant.fr//img/user/file/jodadebagijifewi.pdf
- http://wedooverseas.com/userfiles/file/40023305065.pdf
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161093c820bea4---vikowudevevur.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=understanding+depression+worksheet+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_off0000ed86.bince58fa44eafc1e9832daace14ae767d8a082f942a41c89420991916194ad387d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED86 | 17068 bytes |
font_01_sfnt_off000119a9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119A9 | 16792 bytes |
font_02_sfnt_off000131c0.bin2bd1e39ad323277548d27e00c4dd72386280cff85d071eca9a45c7becea6ee0b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131C0 | 10916 bytes |
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