MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating it functions as a link farm and uses urgency lures. The presence of embedded URLs, including one associated with a 'tax collector' theme, suggests a phishing or malware distribution attempt. Although no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to trick users into visiting external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
Heuristics 7
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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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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://merrygoldholidays.com/ckfinder/userfiles/files/13233596296.pdf In PDF document text
- http://modero.vn/upload/files/94022192480.pdfIn PDF document text
- http://fmmvn.net/userfiles/files/laxedajefor.pdfIn PDF document text
- http://refpecsbelvaros.hu/kepek/files/72256447267.pdfIn PDF document text
- http://asr-net.ru/uploads/files/99301341998.pdfIn PDF document text
- http://tikatalog.sk/_files/file/34699555059.pdfIn PDF document text
- https://laughteronlineuniversity.com/images/upload/files/33967920954.pdfIn PDF document text
- http://newbiesites.com/userfiles/file/7532023119.pdfIn PDF document text
- http://lngpetro.com/userfiles/file/fupiwopedix.pdfIn PDF document text
- https://calson.garment-pro.com/ckfinder/userfiles/files/23397188964.pdfIn PDF document text
- http://maszyny.pl/userfiles/file/78979150456.pdfIn PDF document text
- http://hasicimosnov.cz/foto/Image/file/1207572298.pdfIn PDF document text
- https://taperagi.com/contents/files/lewifugixiroz.pdfIn PDF document text
- https://vialivonica.eu/userfiles/files/32478197242.pdfIn PDF document text
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612eeb5a17d42---xeguf.pdfIn PDF document text
- http://waetsukai.jp/system/ckfinder/userfiles/files/53213601279.pdfIn PDF document text
- http://apisicul.com/userfiles/files/5353041944.pdfIn PDF document text
- http://v-lukomorie.com/uploader/files/52681417742.pdfIn PDF document text
- http://twilaw.com/files/files/totike.pdfIn PDF document text
- http://12shio5.com/contents/files/1023619719.pdfIn PDF document text
- http://flagrant-desir.com/userfiles/file/36874109767.pdfIn PDF document text
- http://bahtiyardishekimi.com/fckfiles/file/374924252.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=the+tax+collector+streamingPDF 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_off0000e979.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE979 | 18164 bytes |
SHA-256: ef8622b6ffd3bcb116d276a629b48358bbea01dd43811131a7b804bd9f23c664 |
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font_01_sfnt_off0001182c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1182C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013043.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13043 | 10740 bytes |
SHA-256: 23ba33d09c69db051b2c850bb50b697ad01202b79b7a9a94b917b242334e652e |
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