MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm to distribute malicious content or phish users. The presence of external URIs and link farm heuristics strongly supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/78462228632.pdf
- http://restorationteleconference.com/clients/73716/File/48127502765.pdf
- http://www.sport-konyv.hu/userfiles/file/tojojikidovilawireroxolex.pdf
- https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/f76cccd83a36b5ed40a9fd7f1966933f/dozuwawanaweximujek.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/f6c1910024402c44cf26fc39f590f043/42357004753.pdf
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/uhq5nul0km2ovi6u0vkvj3rb0a/pazepilaxiripad.pdf
- https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/6cbbb94b90ceee463e2e1d4aecf5eace/42587577803.pdf
- http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5d59c1e4c---nuxawi.pdf
- https://rsun.pro/admin/ckfinder/userfiles/files/zaxubedotani.pdf
- https://epiphanych.com/images/file/88480676383.pdf
- http://dalboncostruzioni.it/userfiles/files/votabokoku.pdf
- https://akproauto.com/nbloom/fckuploads/file/wosexonisewul.pdf
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160cae63fe0dfe---doxevepafepesizabuj.pdf
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160801a08a4a07---lubafopewew.pdf
- https://isabellepieman.com/userfiles/file/9915710219.pdf
- http://short-story.ru/upload/file/linuzilizukaxajejur.pdf
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c42dbd7e820---22453793646.pdf
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/6neih9921u1mncttuk6o5vtr4f/75792763025.pdf
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090973959d22---78398611199.pdf
- http://kashima.cc/userfiles/file/90188008742.pdf
- https://bestcoloringpages.com/userfiles/file/selotud.pdf
- https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/9un73d2nd0f420f34piqltjimk/32734630311.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=city+hall+new+haven+ct
- 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_off0000c92e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC92E | 16792 bytes |
font_01_sfnt_off0000e145.bind1a552490b322e94a3146b2df87709d256080f6bc263bcfc947551a89f84018e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE145 | 10236 bytes |
font_02_sfnt_off0000f83d.bin8909a0f1b61dc90515548ef1da999eedf19548c3473659df1e64ca5a78d995a4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF83D | 17200 bytes |
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