MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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 https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/6525622d7393d2dfb12119d83d7f2522/43175059920.pdf In PDF document text
- http://laibros.com/ckeditor/userfiles/files/73889926254.pdfIn PDF document text
- https://matratva.in/userfiles/file/79795992577.pdfIn PDF document text
- https://mcq.bmtinhoc.vn/InteriorWeb/images/images_news/files/sudobujemaxiti.pdfIn PDF document text
- https://ww150002.linebot.net/upfile/files/20210903142747.pdfIn PDF document text
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/161379db11a924---nusejorekorisuzelivovel.pdfIn PDF document text
- http://stigstudiotecnico.it/userfiles/files/jivuxesasafim.pdfIn PDF document text
- http://cnsgafgl.netsociality.com/upload/files/dofov.pdfIn PDF document text
- https://pet-fashion.ro/mm/file/48483730672.pdfIn PDF document text
- https://ctyhoanongangiang.com/userfiles/file/84663488074.pdfIn PDF document text
- https://ferado.vn/userfiles/file/97769955473.pdfIn PDF document text
- https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/8e36b07bde06ec153a94da041c804426/binapivivugijitutebu.pdfIn PDF document text
- https://wangwangcamp.com/uploads/files/202109010150084665.pdfIn PDF document text
- http://biancoacolori.it/userfiles/files/97892199870.pdfIn PDF document text
- http://af.ssla.ru/images/fornews/files/92791816700.pdfIn PDF document text
- http://orchid-daikanyama.com/userfiles/file/dodofovadumenak.pdfIn PDF document text
- https://gamma-electronics-eg.com/userfiles/files/12363978186.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/29406987479.pdfIn PDF document text
- http://www.hausbaumesse.at/ckfinder/userfiles/files/tujukanavukidosuzeja.pdfIn PDF document text
- http://gccde.com/downloads/blog/geust/files/jifisosijegujifesuwomex.pdfIn PDF document text
- http://gelinyuanyi.com/upload_fck/file/2021-9-2/20210902135750628352.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=best+place+to+feed+as+a+vampire+in+skyrimPDF 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_off00010d0e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D0E | 11108 bytes |
SHA-256: dfc541f838ce1061cbc7125160c6452df95c969466409e86ebb2e4d5c995e151 |
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font_01_sfnt_off00012708.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12708 | 17656 bytes |
SHA-256: 43997318aa8d9a9529d8a240ed3ea80f25742ef5c06d60a25c293c7314a50a30 |
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font_02_sfnt_off00015469.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15469 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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