MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a link farm pointing to numerous compromised WordPress upload directories, which in turn host other PDF files. This suggests a multi-stage attack, likely for phishing or distributing further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
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://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f338074aa5---16234923768.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b97aafb3a---58285448972.pdf
- https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca825955f1---salezopovema.pdf
- http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e66edccb65---23936231125.pdf
- https://erdenetpost.mn/userfiles/files/xaboxumawifotude.pdf
- https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/3m93tmu9dniqjhu0qrf0bt3es9/65342611320.pdf
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/d1ab8b03f84dd46c6660cc7b6b6d3f40/5954744879.pdf
- https://lbassicurazioni.it/file/33659130345.pdf
- http://stardentalcare.org/userfiles/file/titakojowidugi.pdf
- http://shosholoza.de/file/zifefabat.pdf
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ff2831dd1---16249965141.pdf
- https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a68497500---wimepitewufakewulize.pdf
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/et6mb1o5qpm09ond1n5npfmav3/goxusomeramar.pdf
- http://thedreams.cz/files/zosejikisokorolagiwuze.pdf
- http://anhuifan.com/upload_fck/file/2021-5-15/20210515191559783664.pdf
- http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607bcb3ee4e1f---kukosasi.pdf
- https://altbuket.ru/files/77932298729.pdf
- http://appletechsolutions.com/userfiles/file/bumopadokiren.pdf
- https://birsamundapark.in/userfiles/files/16780924614.pdf
- http://www.bandungmesin.com/file/batupikewemelilufifuroban.pdf
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab14079ea3d---85861053742.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=wind+poem+by+ted+hughes+questions+and+answers
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000baed.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBAED | 16792 bytes |
font_01_sfnt_off0000d304.bin5709f795383ab04bbae844396afa7407ef82504db55b740022782372b3a07f3a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD304 | 11372 bytes |
font_02_sfnt_off0000eceb.bin4e83d44af430d918de4d076a429acfd62b77277c9cc0678986c7962748765d0c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECEB | 15304 bytes |
font_03_sfnt_off000113e9.binbfc7ce51a1a9b37382af61f0075eb0cdb972126da031002d338643432d80e6e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113E9 | 16252 bytes |
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