MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a lure to external resources. The presence of PDF_JS indicates the embedded JavaScript is likely used to facilitate the redirection or exploit.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
Heuristics 8
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://willmarlakesarea2040.com/ckfinder/userfiles/files/51642307386.pdf
- https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/d99c8a6aa86a2a0d6df12b87fc77d146/97217229578.pdf
- https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/f43a92508a6cb1f33d96a531c2e9bd76/xukolivil.pdf
- http://garageanything.com/js/upload/files/kowogesevasol.pdf
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608baf105e289---wuwuwav.pdf
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/mo2surrv83jvh6pj8gdjq02kmj/sebutuxejenubof.pdf
- https://mangonebike.com/uploads/file/retedo.pdf
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/5aa0dd8bbcf8f2a7eb631f9b04185619/78256852633.pdf
- http://www.empresshasnoclothes.com/siteuploads/editorimg/file/zomazene.pdf
- http://bjsixiang.com/jingkelun/userfiles/files/20210701143717.pdf
- http://ideatity.com/ckfinder/userfiles/files/23512046401.pdf
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9438776f8---5397330456.pdf
- http://go-pxl.com/uploads/files/murugapawamiwejifa.pdf
- https://stegopackaging.com/wp-content/plugins/super-forms/uploads/php/files/tmpcq5viot62mto9n643at33f1/fopexijumalujuloxafugez.pdf
- http://saxonrt.hu/img/userfiles/files/xapijelafajufed.pdf
- https://www.ideaklinikankara.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073062980444---zixiranemejinozinuvavo.pdf
- https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/460ff2a15b1bfab3ab0e2c8f436f244b/watifitijatezuva.pdf
- https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/740ef1421dd84385c6729f327e2d9e22/tagixut.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=precalculus+with+limits+third+edition+answers
- 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_off0000c406.binc3e1f9a9ba1cb60dc134609905d49d576d73ef2a6ee307a2db53f932127248b9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC406 | 10824 bytes |
font_01_sfnt_off0000dcdb.bin1dc2089b437e41f80bfc1207e4d7a542db896ef676746ff45b7c60eb93f9df0b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCDB | 17032 bytes |
font_02_sfnt_off000108f5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108F5 | 16792 bytes |
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