MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of links pointing to compromised websites, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and heuristics identified it as a link farm on disposable hosting and pointing to compromised CMS uploads. No scripts were extracted, but the overall structure suggests a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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 http://daejonggyoyc.com/userfiles/file/20210828060610.pdf
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160707762f2a3f---55655662394.pdf
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160ddc252b8d36---3421385295.pdf
- http://benevolo.it/userfiles/files/litatogudifaxajupapal.pdf
- http://ballstonfamilymedicine.com/clients/861402/File/bumuvub.pdf
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16095f6184a4b7---labibininalix.pdf
- http://eugensa.lt/app/webroot/uploads/userfiles/files/68804402388.pdf
- http://jullien38.com/ressource/site-image/files/83870040165.pdf
- http://vdavloeren.be/userfiles/files/2290355799.pdf
- http://pension-erlkoenig.de/img/editor/file/15995456752.pdf
- http://www.ambatownship.com/ckfinder/userfiles/files/kamamufugemukuz.pdf
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/5ddfdd17d1ff8af3412259307193d29a/36037479992.pdf
- http://tourhong.com/FileData/ckfinder/files/20210816_F58999F623993DD7.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a7bd423dccc---wonavusixexi.pdf
- https://digireg.lu/upload/82272723199.pdf
- https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/36c9962430b3c3f9b91cf1b3c99a54c9/fulumugareraragowevigimak.pdf
- http://artgraf24.pl/userfiles/file/zemafu.pdf
- http://bsbcarpet.com/userfiles/file/pabeguwukixewe.pdf
- http://banhangcongnghe.com/upload/FCK/file/vakanosudijaviwoxas.pdf
- https://veterinarycarefoundation.org/userfiles/file/rekapa.pdf
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/enii67c1l2vd48k54n4d2u9l0o/zufobokoranabasub.pdf
- http://drairtools.com/ckfinder/userfiles/files/11834649977.pdf
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/2c53cf6eee4f8df01df9870d3ffca8e3/27120199343.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=msd+manual+consumer
- 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_off0000db3b.bin6cac85b9e7a3969636807b20417779cf6c4f23bc517c7b59bf678b64fe02fac1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB3B | 10436 bytes |
font_01_sfnt_off0000f2d9.bin592ab973800e57d38b2feb27b99fdb1fd6571e8fb5302d1435185c58f2bba807 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2D9 | 18508 bytes |
font_02_sfnt_off0001232f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1232F | 16792 bytes |
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