MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm for SEO manipulation or hosting malicious content. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a link farm heuristic further supports this. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 5
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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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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://crewmak.ru/uplcv?utm_term=simple+interest+worksheet+answers+key
- http://allgeology.ru/ckfinder/userfiles/files/10657195038.pdf
- https://pemaboutiquehotel.com/assets/userfiles/files/zasum.pdf
- http://deeringbayrealestate.com/userfiles/files/10154691145.pdf
- https://rgcsmt.org/ckfinder/userfiles/files/10600673479.pdf
- https://watertorens.nl/userfiles/file/2156723001.pdf
- http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20210911015019.pdf
- http://defhjdr.friend-match.com/upload/files/8332576405.pdf
- http://vxclouds.com/userfiles/file/daperelanelopowobevu.pdf
- https://smwebtechnology.com/arishayurveda.com/userfiles/file/55184879159.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139477501ffb---15298207350.pdf
- https://xn--bren-mgenwil-gcbf.ch/sites/default/files/fck-uploads/file/lunoxifadovezuvikiwefugur.pdf
- http://world-green-hope.com/uploads/files/zozitipudatawoduwexedogew.pdf
- http://futurepoolandspa.com/ckfinder/userfiles/files/7923895042.pdf
- https://ww150007.linebot.net/upfile/files/20210902192231.pdf
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135a7f86bde8---41383361846.pdf
- http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/161364c5aa1e79---xopofekimege.pdf
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161370867b39cd---58172775084.pdf
- http://szyoujin.com/UploadFile/file/20210912035528940.pdf
- https://siroyensao.com/upload/files/49512409183.pdf
- https://konzolstudio.ro/uploaded_files/file/sogipizoregilebowokafopiz.pdf
- http://evo-models.com/uploads/userfiles/files/27532979378.pdf
- http://consoles-a-gagner.com/fckeditor/userfiles/file/natobodogijawawom.pdf
- http://sunriverps.com/data/editor/file/zilajupafadalogimese.pdf
- http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/mixezurekiduvunu.pdf
- 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_off0000baad.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBAAD | 16792 bytes |
font_01_sfnt_off0000d2c4.bin212e14b397c35c5a5f47017f0389820067c173f536966c12ae114126ea3c513f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2C4 | 10884 bytes |
font_02_sfnt_off0000ebc3.bin7d774bdc2c95ddd21d0f6cb27aaf4ce95f18dddd2c72942e161df08f8c222069 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBC3 | 15444 bytes |
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