MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress uploads and other potentially malicious sites. The document body is unreadable, but the heuristic firings strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://schlosshotel-murten.ch/userfiles/files/nabunarenik.pdf
- https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/7dc25fe704d586fb1ed7b95cbca134bf/sakarajofon.pdf
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d5038e100d2---13316491376.pdf
- http://schooldistrictservices.com/clients/f/f6/f6ab1571d2cdf5e569af7b76e288b17c/File/goxesapofi.pdf
- http://ahxxzx.com/userfiles/202105/file/60379774089.pdf
- http://sakaryakasaplarodasi.org/userfiles/file/wisuwurugonuniwixek.pdf
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/b25f0efdfc3a37ac5170353a2f699663/xiloxezonifabesorinami.pdf
- http://apisicul.com/userfiles/files/96840238081.pdf
- https://celebicatering.com/upload/ckfinder/files/83902344024.pdf
- https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6f8e9b3e6---71256968231.pdf
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e242abb141---81362460530.pdf
- https://honda-otolongan.com/upload/files/88080925425.pdf
- https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/2680acacb603323a20c8cf7310ad48ed/3088576564.pdf
- https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b741a58695a---zakepufoxevivakofusis.pdf
- https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/n528ohg0c47pm5vv6ffv2nmouu/50089953649.pdf
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a60d952b9---fuxabatemakizorebopun.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=why+is+yeast+alive
- 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_off0000dd4d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD4D | 16792 bytes |
font_01_sfnt_off0000f564.binfa6c32c993004710776fdc7c852ee150a7afbb650ec233153926116893bab571 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF564 | 10056 bytes |
font_02_sfnt_off00010be9.binadaa9dfb8501fd9db0e9eb6fd8917e4bfbc857b1dc0d310c25d52541c6897a1f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BE9 | 16672 bytes |
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