MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm used for SEO manipulation or to distribute further payloads. The presence of these links and the overall detection by security tools strongly suggest this file is part of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9944
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 https://businessservicesuk.com/userfiles/file/37395160872.pdf
- http://greenlivinggarden.com/htdocs/UserFiles/file/pujogozup.pdf
- http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079128801465---25624447163.pdf
- https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/8j19msgh4k32ae27n5os0334f0/xogumabefep.pdf
- http://shqinze.net/admin/upimg/file///povomotigudeloju.pdf
- https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/gf1duumfrafpef3rqm01mc3saj/tuwumadiw.pdf
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/4d54935968dd3aaa5a85f368ab8fdbcd/26386073279.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5756343b5d---30501241809.pdf
- http://panziofabian.hu/fck_kepek/latiwido.pdf
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b546516a9---bufakotunifogub.pdf
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/5hnjnrjkskm4g0s9k592t24dvm/83626906272.pdf
- http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b7a5c98366b---wujugopim.pdf
- http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/1ecvssb7ablulhdju65hgovvhd/rubimiganeximifu.pdf
- https://bdsvieclam.com/upload/files/patulejowewilo.pdf
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/8cbb681b4f970bb11b6f6a9df91f8d97/bijijoruwelera.pdf
- http://wellfoto.cz/pictures/files/sowugavoluzefo.pdf
- http://crmrealty360degree.in/userfiles/file/guzutorovoginegeni.pdf
- http://anhuifan.com/upload_fck/file/2021-5-12/20210512144936846875.pdf
- http://sbnjl.com/userfiles/files/22232349479.pdf
- http://stavclearing.ru/upload/files/6536275490.pdf
- https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/bumj0iue5rib2duatfs2iih4qs/kubesejevu.pdf
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093db859f8f7---45941711114.pdf
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609bdfdc0e916---zilav.pdf
- http://sns.hu/_user/file/difofawuxidodugog.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=free+calligraphy+practice
- 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_off0000ed29.binf6959ece2be70717f105ddf7a1c3faf8ab499ed19a08d3f88d4edba6f427dfa0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED29 | 10352 bytes |
font_01_sfnt_off000104a4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104A4 | 16792 bytes |
font_02_sfnt_off00011cb6.bin348c27fc4404f1d758c2d5df786c91b9b0d3d370b3fdd50c5bc4be7f78b1fab0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CB6 | 18716 bytes |
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