MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as containing a link farm, with many distinct hosts and URLs pointing to potentially compromised upload storage. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the presence of numerous external links suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16143a6bca6a9b---99631647696.pdf In PDF document text
- http://year-c.com/upload_fck/file/2021-9-12/20210912023018967586.pdfIn PDF document text
- http://basyapiemlak.com/yukleme_klasoru/userfiles/file/sidevuniriwiliban.pdfIn PDF document text
- http://maternites-catholiques.org/ressource/site-image/files/26861641503.pdfIn PDF document text
- https://interior-mark.com/ckfinder/userfiles/files/gugopitiwebivetilakikeji.pdfIn PDF document text
- http://protezas.lt/i/File/16308104560.pdfIn PDF document text
- http://kondicionery-elektrostal.ru/upload_picture/file/63881002355.pdfIn PDF document text
- http://congtrinhnhaviet.vn/upload/files/71997267309.pdfIn PDF document text
- http://itexpertdog.nwoasis.com/upload/files/1366469367.pdfIn PDF document text
- https://hinodanang.com/uploads/image/files/lufexunaxese.pdfIn PDF document text
- http://emblem4home.com/UserFiles/Member/File/zejin.pdfIn PDF document text
- http://nationalcoopadvisors.com/userfiles/files/37247528347.pdfIn PDF document text
- http://ajej.pretty-match.com/upload/files/21702513967.pdfIn PDF document text
- http://azizavacanze.com/userfiles/files/3761168057.pdfIn PDF document text
- http://trubaopt.ru/content/file/wuwujetikanumatug.pdfIn PDF document text
- http://express-service-auto.fr/ckeditor/ckfinder/userfiles/files/78416339129.pdfIn PDF document text
- http://shopcloud.cloud/ckfinder/userfiles/files/xakubuk.pdfIn PDF document text
- http://liavanhaeringen.nl/userfiles/files/84615517683.pdfIn PDF document text
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/0090be841ac0f7d2f0fb0d8486324b2e/rarasotexevodut.pdfIn PDF document text
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/uh016s6h7rem542k1mj0mh8rs2/27867288481.pdfIn PDF document text
- https://grupahatak.pl/admin/_fck_files/file/93194130320.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=install+2+of+the+same+app+androidPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d0de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0DE | 10836 bytes |
SHA-256: 3a2b5c7d95225c335ac85bea727bceba1595cbc99f9273547e2b06e911445ebc |
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font_01_sfnt_off0000e9ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9AD | 17084 bytes |
SHA-256: 51ff95a8e8b35ad8efc70033bee6d90274cf13b3fe565c1418a235b257cea79c |
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font_02_sfnt_off000115d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115D9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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