MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to potentially compromised CMS upload directories. These links likely serve to redirect users to malicious content or phishing sites, a common tactic for initial access via spearphishing attachments.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa4cd6df17---97383342281.pdf
- https://megatekspb.ru/sites/default/files/uploads/50237252484.pdf
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100d517bdb37---redovikaxojilufigonifatob.pdf
- https://mps-india.com/userfiles/files/jidug.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/80a592b3cc468db389d59506be31b303/pufovamibubami.pdf
- http://netmode.net/app/webroot/uploads/files/56802458468.pdf
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160834a6d0f103---9524332059.pdf
- http://re-view.online/fckFiles/file/35149098470.pdf
- https://asesoriagade.com/app/webroot/files/files/bimexosutefew.pdf
- http://rent2day.ca/ci2/userfiles/files/gogutudinilalinos.pdf
- http://rhondachem.com/d/files/lurageledisoxurazapitije.pdf
- https://ka-base.no/images_students/files/modes.pdf
- https://magyar-logyogyasz.hu/fileok/file/99345609156.pdf
- https://www.creativetalentnetwork.com/ckfinder/userfiles/files/61848465092.pdf
- https://ancoraeducacion.com/images/dirotomak.pdf
- https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/a4805b2dd36d959ea00d173968a2978a/46933147108.pdf
- http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095ba6973b63---60481691831.pdf
- http://goodtraefarm.com/ckupload/files/72454765262.pdf
- http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/1243349168609ba8c49b55a.pdf
- https://mimpishio1bet.com/contents//files/84622970557.pdf
- https://vleek.com/uploads/files/wufulufaxifubumetux.pdf
- https://blugarden.eu/file/guwetirajaxuje.pdf
- http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609644e3a6d72---ravuvezuvamulewinekizis.pdf
- http://walkofagesvt.org/clients/0/0e/0e42319052772b195a43ba3ede0f03e0/File/mizugusiwelojuwufadipo.pdf
- https://thietbivesinhanhhuy.com/asset/files/kurokuramudebojolulede.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+tell+if+a+table+is+a+function
- 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_off0000d7e5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7E5 | 16792 bytes |
font_01_sfnt_off0000effc.binddc0da19c7da0f7f663ea44d7081c1ab08fd0578eee7a88b4fcbcfb91f075e58 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFFC | 10548 bytes |
font_02_sfnt_off00010830.bin2657afa35ad604215181245054e4778188ec6ac5dabd73d94e302f693ad44a23 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10830 | 18780 bytes |
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