MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and a large number of external URIs, many of which point to compromised WordPress sites. These links likely serve as a link farm to redirect users to malicious content or downloads. The ML classifier strongly indicates maliciousness, supporting the attack pattern of luring users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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 http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161410a7e9556d---loxowubolumitikugunosamiw.pdf In PDF document text
- https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1614781ca84b65---jofanajesobalidijiwano.pdfIn PDF document text
- http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3a2c98319---28048192071.pdfIn PDF document text
- https://www.hkha.com.hk/ckfinder/userfiles/files/74782206767.pdfIn PDF document text
- http://offerseir.com/basefile/offerseircom/files/84969392402.pdfIn PDF document text
- https://suthuytinh.com/app/webroot/uploads/files/nudotijik.pdfIn PDF document text
- http://www.ondebiz.com/userfiles/file/takukesodajujojaruwoji.pdfIn PDF document text
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ce50bd1a4d---jazofaxipesem.pdfIn PDF document text
- http://www.vikingmaterials.com/img/20819672280.pdfIn PDF document text
- http://jumpstart.mobi/userfiles/file/10661802947.pdfIn PDF document text
- https://ruxthai-guesthouse-chiangmai.com/ckfinder/userfiles/files/wevat.pdfIn PDF document text
- https://stichtingech.org/ckfinder/userfiles/files/663531804.pdfIn PDF document text
- http://investgeorgia.ge/userfiles/file/94479561676.pdfIn PDF document text
- https://parlagame.net/calisma2/files/uploads/43470204039.pdfIn PDF document text
- http://pumarecovery.com/userfiles/files/linobufuregixusiveligo.pdfIn PDF document text
- https://uleshuzatabc.hu/files/file/43098812030.pdfIn PDF document text
- http://e5tbr.alruaa.com/ckeditor-ckfinder-integration/uploads/files/48157578205.pdfIn PDF document text
- http://unionasset.net/file_upload/spaw_upload/file/20210910144909.pdfIn PDF document text
- http://eldmsh1.ru/js/ckfinder/userfiles/files/sevisirikag.pdfIn PDF document text
- http://www.morrisjones.co.uk/EditorImages/file/41997447673.pdfIn PDF document text
- http://webinaris.eu/ckfinder/userfiles/publics/files/faxuvupugosogojiteled.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=supersonic+warriors+apkPDF link annotation
- 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_off0000b4cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB4CB | 17864 bytes |
SHA-256: 0438fb15731dae3630126246af17eab0a13a425755c1565d7bc595580296a8eb |
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font_01_sfnt_off0000e334.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE334 | 10576 bytes |
SHA-256: 4bdaae4bfbb9dca1f194324ee6b522b9c90f06053239139cea10406d47077e4a |
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font_02_sfnt_off0000fb7f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB7F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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