MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous external links, many pointing to disposable domains, which is characteristic of a link farm used to obscure malicious destinations. The heuristic 'PDF_RANDOM_URL_LINK' specifically flags a link to a PDF hosted on a suspicious domain, indicating a likely attempt to deliver a secondary malicious payload. The ML classifier and ClamAV detection further support the malicious nature of this document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d2f1095db6---52455238322.pdf In PDF document text
- https://asiarsolutions.com/userfiles/file/xilula.pdfIn PDF document text
- http://capriololaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wumanu.pdfIn PDF document text
- http://exms.fr/sites/default/files/file/92978208236.pdfIn PDF document text
- http://www.satunatc.ac.th/ckfinder/userfiles/files/gomobuxosugizubexufula.pdfIn PDF document text
- https://galaxy-training.com/userfiles/file/35540829560.pdfIn PDF document text
- https://seeandhearbetter.ie/img/shop/contents/gazejegovomudosewil.pdfIn PDF document text
- http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/jujerugakowegokojev.pdfIn PDF document text
- http://nesemlak.com/test/images/uploads/files/38795942503.pdfIn PDF document text
- http://nguyenthaotech.com/upload/files/3413632736.pdfIn PDF document text
- https://www.bevillelecomte.com/ckfinder/userfiles/files/vugimuwunupowo.pdfIn PDF document text
- http://patronusalapitvany.hu/public_html/upload/makemarof.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5b6e3728c034f6a0111d4cc029d4de44/ramepezi.pdfIn PDF document text
- http://xy-interior.com/uploads/files/202109012111021350.pdfIn PDF document text
- http://paglialonga.it/userfiles/files/29915481105.pdfIn PDF document text
- http://tcihk.com/userfiles/nagixugoriwuwenufoz.pdfIn PDF document text
- http://kompletucetnictvi.cz/files/file/86969958814.pdfIn PDF document text
- https://butagallery.com/userfiles/files/93349469124.pdfIn PDF document text
- http://selidbe-beograd.info/files/52721947824.pdfIn PDF document text
- http://home-plast.ru/foto/files/tagesufemudakurotu.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=textbook+of+biochemistry+for+medical+students+9th+edition+pdf+free+downloadPDF 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_off0000cd9e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD9E | 11648 bytes |
SHA-256: 91f9c7aa126ab3fa3c584f2e9cc6ee86cfdaeeb7e853723dfa539141b99225a9 |
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font_01_sfnt_off0000e914.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE914 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010126.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10126 | 17068 bytes |
SHA-256: 3effba15605aac191f1ed81646547177dfcc495755060a94495a6531ecec4957 |
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