MALICIOUS
156
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 websites and disposable hosting, indicating a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious content or downloads. The file's structure as a link farm is a common tactic for distributing malware or conducting phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9833
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://china-zub.ru/userfiles/file/54489660285.pdf
- https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160f10e3617ad4---nejalivokadigewogavonoka.pdf
- http://oticonshop.com/ckfinder/userfiles/files/31288978331.pdf
- https://apgr.eu/UserFiles/file/zavuka.pdf
- http://cnex.cc/images/blog//file/sugaba.pdf
- http://ituor.ir/basefile/chartermeinfo/files/66358134837.pdf
- https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/d48a2360577017cbaa4468b7d9c26319/lozarofizozadewizop.pdf
- https://gppacdatabase.net/userfiles/file/51820668418.pdf
- http://assotechne.eu/userfiles/files/vamumutixebax.pdf
- https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/251de99d619ff1383469381a6e145736/valibisudesenezizetowugi.pdf
- http://ampletrekking.com/userfiles/file/66731157848.pdf
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/6713de01e98e43aebc5f6a0eda282cb2/62488474946.pdf
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/5e24ce941f6c196375827876a38ef82f/53701755016.pdf
- http://cyc.cz/pictures/clanky/files/zumetijiwufitov.pdf
- https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/f2jec44sri84k8rc08isdbfbpv/88691874445.pdf
- http://benthanhsgfarm.com/images/uploads/files/baviwew.pdf
- http://vinacafe-dalat.com/Images_upload/files/84811169947.pdf
- http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee4a1d77ef---pujam.pdf
- https://banderlogclub.ru/Files/file/zixepejipanedo.pdf
- http://onmamtour.com/FileData/ckfinder/files/20210628_AB1171CDF5EA48B6.pdf
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608557962d29f---mogaxumexolujanulanox.pdf
- https://dgaspcsm.ro/ckfinder/userfiles/files/dotekirogej.pdf
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ec506e3b70e---simomodisiboragiv.pdf
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/i6qhg2ns4ste12u660cs5bn8kv/45664450012.pdf
- https://nakipoglugroup.com/upload/ckfinder/files/legaziboduwowuxaso.pdf
- http://jingluo.net/uploadfiles/files/95946731348.pdf
- http://am-assets.com/aom/magnolia/userfiles/file/39734657885.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=nuance+power+pdf+3
- 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_off0000d758.bin48e114e43e49c6c1881f2e771f47461f5cd000c38c09e77e983d46d54da5902c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD758 | 18160 bytes |
font_01_sfnt_off00010664.bin138eeaf91d0e6e330ace424cc36ea3db73b59bcc7c89814c38ed84f98dd38b9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10664 | 10544 bytes |
font_02_sfnt_off00011e9f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E9F | 16792 bytes |
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