MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which are part of a link farm hosted on potentially compromised or disposable domains. The ML classifier strongly indicated maliciousness. The primary attack pattern appears to be SEO manipulation or hosting malicious redirects through a link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9907
Heuristics 6
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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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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://locktactyuma.com/userfiles/file/zibumidelopolos.pdf In PDF document text
- https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/56eb49eeb7660ac7f175af9cb503bf4d/gaxigefisekewilibavodoz.pdfIn PDF document text
- http://malopolskiszlakwinny.pl/upload/File/xukisusuxerop.pdfIn PDF document text
- http://theeultimatenetworker.com/ckfinder/userfiles/files/zepusugokujoxajevoma.pdfIn PDF document text
- http://tageedesign.com/ssmpt/documents/file/37934102221.pdfIn PDF document text
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/313c04d91baefe5fa17b02a419a52bdf/wawozazeriziruvikibinumo.pdfIn PDF document text
- http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613017f784f15---9927860450.pdfIn PDF document text
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/7svfg1dluevl9b9p9utt35tt51/segewavedexodox.pdfIn PDF document text
- http://hatowo.com/app/webroot/uploads/files/mefunaposunilew.pdfIn PDF document text
- http://eschool365.in/js/admin/uploadfiles/file/64988802901.pdfIn PDF document text
- http://agro-pasz.pl/ckfinder/userfiles/files/gofutevomukemalibubu.pdfIn PDF document text
- https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/67a490eb7bf84b230c50dbfb3da68e2b/lomozusanesadax.pdfIn PDF document text
- http://myphamso1.net/uploads/files/nunavewogazalebere.pdfIn PDF document text
- https://cubic.is/userfiles/file/76384847817.pdfIn PDF document text
- http://execdentalclinic.com/uploads/ckfinder/userfiles/files/63079819879.pdfIn PDF document text
- http://kd-council.com/upfile/files/nudosovub.pdfIn PDF document text
- http://sro52.ru/uploads/files/82775127737.pdfIn PDF document text
- https://hippodrome-compiegne.fr/www/uploads/file/87889723440.pdfIn PDF document text
- http://astorandblack.net/emailer/userfiles/file/tapozexiveze.pdfIn PDF document text
- http://dotykbylinky.sk/_subory/subory/80478359438.pdfIn PDF document text
- http://teewer.mn/ckfinder/userfiles/files/66457811565.pdfIn PDF document text
- https://uleiuri.ro/userfiles/file/xudekisonub.pdfIn PDF document text
- http://himalayakebab.com/shipinc/userfiles/files/lubisezamo.pdfIn PDF document text
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/27bkkbq8h8hdt751u1feslfr37/17357106449.pdfIn PDF document text
- http://yakutiaprime.ru/SITE/files/editor/file/jozagubevomugefa.pdfIn PDF document text
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161320de9951b5---loges.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+search+an+app+in+androidPDF link annotation
- http://e1pl2.nazwa.pl/busy/fotki/file/62464245230.pdfIn PDF document text
- 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_off0000bb17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB17 | 19056 bytes |
SHA-256: abbdd42d910d4ab0f8bb4c60e71f02941f23c85a4b5d516327ce6e53de662ca4 |
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font_01_sfnt_off0000ed50.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED50 | 10644 bytes |
SHA-256: 39f2fc64db148de416c2afb287737d3b058df4c197dcfc870c5b013f096c568e |
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font_02_sfnt_off000105a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105A6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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