MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of malware. The document body, though heavily corrupted, suggests a lure related to university registration forms. The presence of numerous links pointing to compromised CMS upload directories indicates a pattern of hosting malicious files on seemingly legitimate but compromised websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073909b2bb1f---mofemaxefiri.pdf
- http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1609052a8f12c1---vafoxuzav.pdf
- https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/eh3vaqoiabpfbnmaggctfj9s9m/20812217643.pdf
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/v496id2v6d40ulakhpjm6ndb71/sugepilufe.pdf
- https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/10994ff9967597dcc4091d6c85c86835/13403756819.pdf
- https://menu2uplus.com/images/file/xevagusa.pdf
- https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/14b1ed4b25b1df017d228953aea3e8f7/kowubeworikejuvu.pdf
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608b36f900f95---44199205402.pdf
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe75164b84---pepakisixolewu.pdf
- https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f54d0bed77---pitezubuvutij.pdf
- http://extracam.es/app/webroot/arxius/file/guwasisinuroxebo.pdf
- https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/bn8h24d2mjm0eupp3a1e0hn2nf/21584756418.pdf
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/7b61067ac4b209d57cf898daac3a9df9/roposuraximexuxotanuxuna.pdf
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/ffe7a0ebad964c8aeea3f9b4f23ba350/lefavofuzed.pdf
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160769cbca2d67---11158254536.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=bilaspur+university+online+registration+form+2018
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d830.binf593cf1d339dd88a0cea999e49ce8e4541f906cfd6750210968fdef736854cff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD830 | 5952 bytes |
font_01_sfnt_off0000ec74.binfeb5353f69db264af6bc144621868c34373697e12343e8ad40fcd3a7ef283c83 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC74 | 10712 bytes |
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