MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to multiple PDF files hosted on compromised websites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of MFA lure heuristics further supports a credential harvesting scenario.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 8
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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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MFA / one-time-code harvesting lure high SE_MFA_LUREDocument asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://vico-real-estate.com/ckfinder/userfiles/files/sixudozotiva.pdf
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/thrvnp2hab5i95tidpi2b5gp1g/94053532697.pdf
- http://coytex.net/ckfinder/userfiles/files/87114883821.pdf
- http://jycjqj.com/uploadfile/file///2021090407173457.pdf
- http://pronobile.de/catalog/file/3536853825.pdf
- http://orem.mn/uploads/files/69364856012.pdf
- http://levne-pohary.cz/UserFiles/File/45406194256.pdf
- https://akgoz.zemta.com/uploads/files/12046634567.pdf
- https://inprovitpuertorico.com/ckfinder/userfiles/files/niwerajokejozanifesatutoz.pdf
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16147c9487a3d8---bulagaradawirevab.pdf
- https://ruxthai-guesthouse-chiangmai.com/ckfinder/userfiles/files/61538621054.pdf
- https://sofahatinh.com/upload/files/25689889774.pdf
- https://dailyiat.com/html_upload/file/85201826860.pdf
- http://teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/3815763659.pdf
- https://pgprojekt.pl/Upload/file/22148294614.pdf
- https://netron.pt/app/webroot/media/files/zeposujopeweguj.pdf
- https://oilbasaro.com/web/images/ckfinder/files/20210915104755.pdf
- https://grupa-energia.pl/attachments/file/99407753439.pdf
- http://fapannimario.it/userfiles/files/65119283191.pdf
- http://textstricker.de/benutzerdateien/wesakaxura.pdf
- https://bizimpin.com/calisma2/files/uploads/baparubemewelefunipuz.pdf
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613f211bda9f6---69249484438.pdf
- https://pchome.uzai.ca/upload/files/18212002530.pdf
- http://zvaracskaskola.eu/editor_uploads/system/files/45624963537.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=unsynced+contact+android
- 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_off0000e5b5.bin46036d49670cd323fff67c94fab9787499f93222ecc8311c10b352c72fdc6ea0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5B5 | 10440 bytes |
font_01_sfnt_off0000fd8a.bin1d2928c1482651f87fe248a63ed51078629e38728ad8e9764813cdff5a23dbfb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD8A | 17720 bytes |
font_02_sfnt_off00012b46.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B46 | 16792 bytes |
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