MALICIOUS
192
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, some of which point to compromised or disposable hosting. The 'SE_INVOICE_LURE' heuristic suggests a phishing pretext. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing further payloads or conducting phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9848
Heuristics 9
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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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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://grandviewgroupresort.com/upload/files/87792513243.pdf
- http://xn--80aer5aza.xn--c1acndkmcarx.xn--p1ai/ckfinder/userfiles/files/89024450018.pdf
- http://industrialdevices.in/uploads/zunixerudubegiziwaw.pdf
- https://drlanda.hu/user/file/12737023620.pdf
- https://signika.pl/Upload/file/lenexubalulufod.pdf
- http://hoaiduc.edu.vn/ckfinder/userfiles/files/85014884586.pdf
- http://motovelo-nmsk.ru/userfiles/file/22005608856.pdf
- https://marupyara.com/fotos/userfiles/file/32762554064.pdf
- https://hongmao.tw/uploads/files/202109020359463054.pdf
- https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/83341657e9811f9a80cb31ebf6ac0e55/sozomejakutikewefag.pdf
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613494e8490a1---pinore.pdf
- http://medtravel.lv/images/hand_uploaded/files/tigavodivenutuxetufop.pdf
- http://kaizenlife.com/ckfinder/userfiles/files/potobajirawonizowof.pdf
- http://tradeweb.es/userfiles/file/jazemefoke.pdf
- http://industrialsupplies.pk/userfiles/files/16719803139.pdf
- http://miwon.com.vn/app/webroot/uploads/files/12343179954.pdf
- http://gyermekhaz.hu/Content/site_images/files/48168087913.pdf
- https://whitesal.com/data/images/file/7023_20210902150528.pdf
- http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/dcc9ea2f2f7bdd4ca931f1858dc2ef68/97189515059.pdf
- http://www.its-dph.cz/admin/fckeditor/editor/userfiles/file/79394463682.pdf
- http://k9careclinic.in/ckeditor/ckfinder/userfiles/files/dudojo.pdf
- http://change4best.ru/upload/file/kitenixum.pdf
- http://swiss-ex.com/images/blog/file/96733605123.pdf
- http://vo23.ru/upload/file/10830758495.pdf
- http://portaldo.eu/contenuti/upload/file/rajamoxam.pdf
- http://titibbs.xyz/js/ckfinder/userfiles/files/60010637289.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=how+to+transfer+files+from+phone+storage+to+memory+card
- 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_off0000e824.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE824 | 16792 bytes |
font_01_sfnt_off0001003b.bin712dec4e012b6db9229d21fad01a369224cf198eeabd98dc78e26c6e75d8e0ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1003B | 11256 bytes |
font_02_sfnt_off00011a47.bin21cb41c9a6b68b2b0b6341447337a849cd89f30811b60910b58255715e56a53f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A47 | 18664 bytes |
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