MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The file functions as a link farm, directing users to numerous compromised WordPress upload storage locations and disposable hosting sites. These links likely serve as a distribution point for phishing content or further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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 http://accu-chek-event.com/ckupload/files/27649196830.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7d2b5d5df---12526914761.pdf
- http://stardentalcare.org/userfiles/file/veluwoboz.pdf
- http://baobiachau.com/luutru/files/60925878789.pdf
- http://amazingindiaphotos.com/amazingindiaphotos//upload/fckimage/file/72450819778.pdf
- https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160908f166b337---52941455062.pdf
- https://charlesstreetvideo.com/userfiles/file/1026459422.pdf
- http://strechybenesov.cz/content/95739956284.pdf
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608510bd44c1e---41885347871.pdf
- http://w-f-l.de/user_img/file/38144228791.pdf
- https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/71cb7d5b708b1314c857a11037701c74/xegeduvukorodisubeganidar.pdf
- https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/ij3oip4fabftjn3do74t7jvob1/tonivi.pdf
- https://churchofgodinjamaica.org/app/webroot/files/mewefegorivubovudi.pdf
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4b84ca5d5---narowewenofemetaje.pdf
- https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/30d0457b6fa4b6c9b827c73d52d4a4ae/93880830841.pdf
- http://m2m2design.com/userfiles/ponib.pdf
- https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/21f498e790aa4dbbb78b64394728b3ed/94675932270.pdf
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608952e8d9704---46060259033.pdf
- http://flirdining.com/uploads/files/jizoxexif.pdf
- https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/46acmi543o6ev01k0qfak22sip/28992436008.pdf
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c610a35af4a---xisapuzi.pdf
- http://jatyn.cn/upfiles/202105/file/1621028952.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=defence+to+defamation
- 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_off0000f0a5.bin4388a0cc0a0362533aad83f1edf51db511ad712372b69d565465bc5c9ed3a08f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0A5 | 17548 bytes |
font_01_sfnt_off00011e75.bin0c279f78e279052ea3347b604f3abf6c639983b6ad8acfaa422c431170cd808c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E75 | 10324 bytes |
font_02_sfnt_off000135bb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135BB | 16792 bytes |
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