MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. It contains numerous external links, many pointing to disposable hosting or compromised WordPress sites, suggesting a link farm designed to distribute malicious content or phish users. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. No scripts were extracted, but the overall structure points to a malicious document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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://crewmak.ru/uplcv?utm_term=make+app+apk PDF link annotation
- https://dom4m.lv/userfiles/files/87848569326.pdfIn PDF document text
- http://nemdanangpho.com/uploads/2021-09-11/images/files/99039898634.pdfIn PDF document text
- https://eqonetech.com/upload/userfiles/files/nomatavinakavowokokuwol.pdfIn PDF document text
- https://www.chablis-gautherin.com/ckfinder/userfiles/files/38999200567.pdfIn PDF document text
- http://stacjaregeneracja.pl/userfiles/file/77919149379.pdfIn PDF document text
- http://gardena.crazyrockinsushi.com/uploads/files/lefomipeferulagodoke.pdfIn PDF document text
- https://vaitinhdien.com/app/webroot/upload/files/19422233533.pdfIn PDF document text
- https://holycrosshealthcare.com/userfiles/files/delelotezuw.pdfIn PDF document text
- http://fosterfreezesantarosa.com/uploads/files/bovusamiz.pdfIn PDF document text
- http://sissonne.hu/editor_up/98873121698.pdfIn PDF document text
- https://holcom-wd.com/webroot/img/files/tobisiletavuparivivor.pdfIn PDF document text
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/79bfe0800f5c317505eb69c053de3446/84913560427.pdfIn PDF document text
- https://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/49912024701.pdfIn PDF document text
- http://tunecharts.com/userfiles/file/nejifimemaxatexujamosefag.pdfIn PDF document text
- http://handbook.hu/upload/page/file/kemafuwop.pdfIn PDF document text
- http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16145ca676301a---jasafodagumujanokanemerez.pdfIn PDF document text
- https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/50levgcl4ac79fi4rb72j5os20/3917346675.pdfIn PDF document text
- http://fusen-es.info/yamituki-n/uploads/files/kiverugirojupar.pdfIn PDF document text
- http://x-site.by/upload/editor/files/57492356262.pdfIn PDF document text
- http://flightshop.jp/images/blog/file/rurox.pdfIn PDF document text
- https://ural-aiti.ru/admin/ckfinder/userfiles/files/49655355929.pdfIn PDF document text
- http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f32289e8fe---puxikagoxopefawezokizajit.pdfIn PDF document text
- http://www.donboscovizag.org/images/files/xesin.pdfIn PDF document text
- https://goldengatetaichiqigong.com/userfiles/file/62983941119.pdfIn PDF document text
- https://hankilfood.com/userfiles/file/20210908202335.pdfIn PDF document text
- 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_off0000d6c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6C2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000eed8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEED8 | 9600 bytes |
SHA-256: 149c4b28534071cec7329cae5fd6bc215eb7b6137b31fe416f971355171af262 |
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font_02_sfnt_off000103be.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103BE | 17580 bytes |
SHA-256: 2a585fd7537bdcda0fdd955816f535273302ece751f7aff1aafec2e3e35b17b3 |
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