MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and multiple external URIs, including links to compromised CMS upload storage and a link farm on disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to deliver a phishing payload or further malware. The embedded JavaScript is likely responsible for initiating the malicious activity, such as downloading a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9783
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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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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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://ka-base.no/images_content/file/78017781206.pdf
- https://webkapper.nl/ckfinder/userfiles/files/57172421192.pdf
- http://tikatalog.sk/_files/file/jigikizizofipux.pdf
- http://e-district.org/userfiles/file/2138649175.pdf
- https://gtijsr.com/userfiles/file/fazupunat.pdf
- https://newtech-utm.pl/userfiles/file/44644298366.pdf
- http://hagelkonzept.de/userfiles/file/93212640730.pdf
- https://peoplehelppeople.net/uploads/File/83440378972.pdf
- http://xedaphcm.com/luutru/files/xixasumegisizodiso.pdf
- https://macintosh-szerviz-javitas.nuttydog.hu/ckfinder/userfiles/files/jofumakisiwafejikaje.pdf
- https://commonlawhouse.in/userfiles/file/29216377733.pdf
- https://hometutorsdelhi.com/userfiles/files/zebimowopubedidunipele.pdf
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613156322bf9e---towirinalogeruseza.pdf
- http://ekotop.eu/userfiles/file/levupuwapetuj.pdf
- https://dcmheavyequipment.com/admin/images/file/63390693183.pdf
- http://friulanapanini.com/images/file/64993741049.pdf
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb25713dcf---mofusad.pdf
- http://vesimport.ru/userfiles/file/bejomufudififenig.pdf
- https://grandegroup.net/files/gawodogezebijexixesex.pdf
- http://grandviewcommunity.com/userimages/1575153314.pdf
- http://ikuma-car.com/js/upload/files/78803684246.pdf
- http://queensparkview.com/image/upload/File/wukupetadaki.pdf
- http://duda-tech.pl/dudatech/upload/file/namolorabewazusune.pdf
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161492e1c72818---55334305680.pdf
- https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/domenegalurovefareseru.pdf
- http://bftt.marketsearching.com/upload/files/surave.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=tvweb+browser+for+tv
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d75f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD75F | 16792 bytes |
font_01_sfnt_off0000ef6c.bine41611308bb2c05ff045a80cc05686df88529097cd6f2daf49a2d41b756b33d2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF6C | 2448 bytes |
font_02_sfnt_off0000fa08.bin4fb2b84e65b739703574751d77f6b14a499e78ff201f37d0c1f4bc8cf388d229 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA08 | 17560 bytes |
font_03_sfnt_off0001279f.binb84ec1bb481bd22002242e5175f1393989a42c64c069dc992201f3932ecea33d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1279F | 10060 bytes |
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