MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farm heuristics strongly supports a phishing or credential harvesting attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://jjkxmy.com/upload/files/202109101017459275.pdf In PDF document text
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16145d2d5223e5---5963723855.pdfIn PDF document text
- https://rt-totaalafbouw.nl/userfiles/file/79442645054.pdfIn PDF document text
- http://myrbacken.se/login/ckfinder/userfiles/files/3760601908.pdfIn PDF document text
- https://adetexfoamgroup.centralcms.cloud/galeria/files/8453103211.pdfIn PDF document text
- http://ciccioinpentola.com/userfiles/files/limesozubibiguk.pdfIn PDF document text
- http://tuttotop.com/userfiles/files/vukiduvikitikop.pdfIn PDF document text
- http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/8d5061ca3b49b9cd81ff178645795568/sasopasasakifojunigabap.pdfIn PDF document text
- http://mawaevents.com/uploads/file/46893618665.pdfIn PDF document text
- https://www.pollackmihalyiskola.hu/ckfinder/userfiles/files/94768395190.pdfIn PDF document text
- http://familiegravesen.dk/ckfinder/userfiles/files/ginokemoxutuvar.pdfIn PDF document text
- http://aaz.sk/editor_uploads/files/razuzurakuzoni.pdfIn PDF document text
- http://instant-image.net/UserFiles/Site/File/tatugepugukogobatel.pdfIn PDF document text
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3ae80e703---98055458053.pdfIn PDF document text
- http://tz5168.com/uploadfile/image/2021/09/12/file/20210912_162625_158.pdfIn PDF document text
- http://studiotecnicoarduini.eu/userfiles/files/reginovubisakajaripewusu.pdfIn PDF document text
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/j86q18bbce9ie74emjnhquhr06/watesixagoperesutut.pdfIn PDF document text
- http://www.tobywells.org/media/fckdir/file/25540767658.pdfIn PDF document text
- http://yigang-lin.com/uploads/files/202109180617338501.pdfIn PDF document text
- http://net-marketing.hu/images/files/9292904968.pdfIn PDF document text
- http://katour.ru/admin/ckfinder/userfiles/files/bivegozonuz.pdfIn PDF document text
- http://dlabiura.kbo.pl/ckfinder/userfiles/files/jepukaka.pdfIn PDF document text
- http://abbeloosschinkels.be/userfiles/file/gubabeniduxolotevugisi.pdfIn PDF document text
- http://kammatrans.com/userfiles/files/55482874624.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=gta+san+andreas+ps2+androidPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000df9a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF9A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f7b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7B1 | 10500 bytes |
SHA-256: cf40dc727dbe99f1b227be1af95a148483891d4b673acadd40d7cbb97f5b3d60 |
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font_02_sfnt_off00010fc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FC1 | 17780 bytes |
SHA-256: bd5345a5b7c19f893b3bd7d453026b5dab85ec4b64a5d828b739df8f5c4db06b |
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