MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm with multiple URLs pointing to compromised WordPress sites and disposable hosting, indicating a likely attempt to redirect users to malicious content. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of numerous external URIs suggests a phishing or malware distribution vector, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://nomylo.ru/uplcv?utm_term=fault+in+our+stars+pdf+book
- http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/fh5m9gchddr44t7sr8v4pl3ts6/bojirob.pdf
- http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce5c939982---nemujeminukefem.pdf
- http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/1608439e468ee2---xedolarezon.pdf
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/a64f0a0637adb0c5449c31d7df0c8989/28397177602.pdf
- http://amon-syotengai.com/userfiles/file/jowisofikamufifeviguzuz.pdf
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7b36cc424d4e625916d1f9fa079671eb/morafeporilazowoxijof.pdf
- http://bwc.lt/i/jagamerulamesujazexiba.pdf
- https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/hnttl9pim64o6o1n8ahsl51rg0/pezogutakemu.pdf
- https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a980d2ab166---nawagevelanu.pdf
- https://sanxuattrucauthangkinh.com/Images_upload/files/75180075048.pdf
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0f95c2072---60289746934.pdf
- https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/25bfc4dcc1bdb80c9df75cf6a9c5d8d3/97116351888.pdf
- https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/4ed28f440a2b1dfa74a6fc7fc72d2704/wojokiwovoj.pdf
- http://werder-ritter.de/UserFiles/File/sawusokinudirazi.pdf
- https://abofahed.com/userfiles/file/69783636110.pdf
- https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/6ebbd2b497e14d7779465f2e92bf88cf/78230940741.pdf
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/1ofuig2ft6qud4oorcr7429n9q/56715369457.pdf
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dd79724e908---48500583899.pdf
- http://lamekatus.ee/uploads/ckeditor/files/fuxavijanogufibe.pdf
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/99e122f3769b378a531dc47f22d9142f/61688933200.pdf
- https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/64943ce1451263bc9fbbd8097a7296ce/19161521353.pdf
- https://grup-insaat.com/userfiles/file/rezetexovupepebenuxexe.pdf
- http://fusheng-vietnam.vn/admin/webroot/upload/image/files/12640458273.pdf
- https://gw21.ch/uploads/userfiles/file/90267813533.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_off0000fb50.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB50 | 16792 bytes |
font_01_sfnt_off00011362.binc834d4c96d2e5c679e35faed3d092b96ca4b19b84bef72799946062ceed28d4d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11362 | 17464 bytes |
font_02_sfnt_off000140b8.bin5578d557abdb49b54e62c61ee3c06f1738f0e0f1b7008c1ffd90c63b1ab7d127 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x140B8 | 10668 bytes |
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