MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, forming a link farm. The embedded JavaScript likely facilitates the redirection to these malicious sites, aiming to deceive users into downloading further payloads or submitting sensitive information.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 http://rkmaster.ru/uploads/files/50687156984.pdf
- https://hatinhjobs.com/upload/files/77695332733.pdf
- http://cornucopiafrederick.com/uploads/files/burafomitorexe.pdf
- http://www.teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/90475044002.pdf
- https://eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/70387126007.pdf
- https://thuhuonglacquer.com/uploads/news_file/20454654039.pdf
- https://dehayemek.net/upload/ckfinder/files/1900450952.pdf
- http://pnc21.com/files/fckeditor/file/199216099061484042a6a01.pdf
- https://suacuachuyennghiep.com/uploads/files/luwimifevowoxakilu.pdf
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149ce188d799---bunakujilud.pdf
- https://tasteadmin.com/ckfinder/core/connector/php/custom/wysi_uploads/files/17710821781.pdf
- http://quimis.org/js/ckfinder/userfiles/files/26387075767.pdf
- https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/161421038d4e5e---rajuzipuka.pdf
- http://bnblspecialities.com/userfiles/files/86741728488.pdf
- http://dinskayarealty.ru/media/file/26350558406.pdf
- http://manchetenewsms.com.br/ckfinder/userfiles/files/sotutetitomusixafoxuno.pdf
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16149b106bef54---725931931.pdf
- http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613756dd1ee72---febazosesidizevuvirumej.pdf
- https://web-dev.ethioapp.com/websites/lightyearsahead/code/userfiles/files/lavuwoxuvubil.pdf
- https://systematix.pl/userfiles/file/zamani.pdf
- https://ever-progress.dacola.com/upload/files/vifulaguzejis.pdf
- https://anhhuynoithat.com/asset/files/161573006.pdf
- https://angelsforwarriors.org/userfiles/files/rozumajamuvapupuwuz.pdf
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/161398f5c5e81c---bopefetimasanapiwutitu.pdf
- http://jayeonrak.com/upfile_editor/2021/files/vuviratunulotanodilukuzax.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=send+text+via+bluetooth+android+example
- 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_off0000bbcc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBCC | 16792 bytes |
font_01_sfnt_off0000d3de.bin4ff6a58a2d20754511d65106efe1c4ef177035b4e476e026393109a935895c63 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3DE | 18912 bytes |
font_02_sfnt_off00010478.bin668355a2b2d2dd112638ec26933727e5c882058eba0bd6f7837d20fac4b0d314 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10478 | 10972 bytes |
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