MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier indicated a high probability of maliciousness. Numerous external URLs were extracted, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://cructi.ru/uplcv?utm_term=solitaire+cube+card+game+apk PDF link annotation
- https://vanchuyenduongsat.vn/upload/files/94538445169.pdfIn PDF document text
- https://istanajpdua.com/contents/files/68945450163.pdfIn PDF document text
- https://stef-nancy.fr/upload/document/madefaluwi.pdfIn PDF document text
- http://hongdacable.com/d/files/72581114903.pdfIn PDF document text
- http://jonme.net/ckupload/files/73078349169.pdfIn PDF document text
- https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/16bb4a7f23062d114602e19c4e25b8ad/boforuxesuxurupinana.pdfIn PDF document text
- http://northmarking.com/userfiles/files/jopolonusili.pdfIn PDF document text
- http://nadiadsa.org/userfiles/file/getasovesidasopomedadoxuv.pdfIn PDF document text
- http://eurolocal.info/sites/default/files/images/file/67130770477.pdfIn PDF document text
- https://samirkumarpaul.com/ckfinder/userfiles/files/feguki.pdfIn PDF document text
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16136170bd6a13---83701872289.pdfIn PDF document text
- http://dfwsedan.com/nbloom/fckuploads/file/rekiwudegewidumozejefi.pdfIn PDF document text
- http://dioblina.eu/userfiles/file/20876400098.pdfIn PDF document text
- http://dyccpharma.com/upload/files/mirajelotulabe.pdfIn PDF document text
- http://vasset.bg/userfiles/file/zosuvuxegozuk.pdfIn PDF document text
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/67a2e4bb41ffeb7a02d9634037c4908b/83860291312.pdfIn PDF document text
- https://md-bud.pl/szklo/photos/file/7379396208.pdfIn PDF document text
- https://magazinul-de-instalatii-sanitare.ro/app/webroot/files/userfiles/files/62311621193.pdfIn PDF document text
- http://erh-hu.com/userfiles/file/27180069696.pdfIn PDF document text
- https://consurs.ro/ckfinder/userfiles/files/zaruza.pdfIn PDF document text
- http://hoshitorionline.com/uploads/files/babufowinavokeliti.pdfIn PDF document text
- http://eventechsite.com/files/files/pazorafizekamir.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_off0000d2fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2FB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000eb0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB0D | 17192 bytes |
SHA-256: fcd9915e2b8cd2b530b8563c22dcd7cad419c19d3c9bf75a097bd7cd306f3bab |
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font_02_sfnt_off0001178f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1178F | 10992 bytes |
SHA-256: 095183815d7d81fb1a439c91f3f131e3d9922e66c16eff3ed0991dd1898fd2b2 |
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