MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, indicating it's not a typical user-facing document but rather a container for malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://irlanc.ru/uplcv?utm_term=what+is+the+fastest+gun+in+fortnite
- https://value.ae/userfiles/file/76504446961.pdf
- https://domilot.com/uploader/files/tagivonunapiwajixal.pdf
- http://www.photonics-science.com/ckfinder/userfiles/files/junazen.pdf
- https://groupunsur4.com/contents/files/66893894612.pdf
- http://dsacare.com/admin/uploads/file/fitobigajiw.pdf
- https://swapnauraan.com/ckfinder/userfiles/files/vawupatuwizimalakufaji.pdf
- http://homeloanz.net/images/e/file/395863068.pdf
- http://colleges-in-tamilnadu.com/FCKeditor/userfiles/file/1940035907.pdf
- https://granitabrasive.com/editor_up/kawarovadapixezo.pdf
- http://azstorestudio.com/uploads/files/fezexoroxanabolez.pdf
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16130045b87b2a---43221925244.pdf
- http://tiyuchangdi.com/upload_files/files/20210904_213246.pdf
- http://dentherapia.hu/files/file/xiwelatavepemajom.pdf
- http://naszymsladem.pl/upload/file/56690737594.pdf
- http://budka39.ru/files/42024112747.pdf
- http://ohmytour.kr/FileData/ckfinder/files/20210908_5F6A89C30C291C99.pdf
- http://criminisiepartners.it/userfiles/files/nazoramibovefuxidux.pdf
- http://www.gieskestukadoors.nl/ckfinder/files/files/15210604189.pdf
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ecaa702155---pezekikewa.pdf
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/161441ae402bb4---65357766872.pdf
- https://belitour.ir/basefile/belitourir/files/zajedagojaxaneb.pdf
- http://udelimpa.es/ckfinder/userfiles/files/nimoperanevoxixubagi.pdf
- http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/bchka71nshbdbel83u75m65hcv/fosejubixiloribikuz.pdf
- http://macierz-grodziec.org/files/file/nopexe.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c914.bin999c4df83987a41fcbe73ed162db0fea5af69d391700a4b75ed34c2c622c6985 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC914 | 17672 bytes |
font_01_sfnt_off0000f6f3.bine38429c6adf1c97e6fd463023fa66996bf39b6c4a2e090766380a1846aeef3e8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6F3 | 10540 bytes |
font_02_sfnt_off00010efc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EFC | 16792 bytes |
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