MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains a large number of embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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 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=it%27s+a+jungle+out+there+sheet+music+pdf PDF link annotation
- http://nghiencuuykhoa.com/uploads/userfiles/file/dibegov.pdfIn PDF document text
- https://www.allduniv.ac.in/ckfinder/userfiles/files/79143373026.pdfIn PDF document text
- https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/nq1kmncakm62vai0iv8eul61bs/75106901869.pdfIn PDF document text
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f8cfa1118---74243989412.pdfIn PDF document text
- http://regcureguide.com/files/files/57170471836.pdfIn PDF document text
- http://flairpens.ru/uploads/files/26510456636.pdfIn PDF document text
- http://championshipsportsrings.com/clients/23492/File/45738969784.pdfIn PDF document text
- http://puzynowska-kancelaria.com/userfiles/file/gebinar.pdfIn PDF document text
- https://www.orthovision-lublin.pl/ckfinder/userfiles/files/sezesomira.pdfIn PDF document text
- http://fine-trading-knotwork.de/uploads/media/64867447178.pdfIn PDF document text
- http://narnivet.com/userfiles/files/49604664091.pdfIn PDF document text
- http://zerosquareonline.com/file/67864596761.pdfIn PDF document text
- http://teenmag.cz/userfiles/file/88621406455.pdfIn PDF document text
- http://apothepharma.com/upload/files/35078199753.pdfIn PDF document text
- https://actor-conseil.com/files/file/ruwudodiwigawojejuxego.pdfIn PDF document text
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160fad3ad450c4---vexalar.pdfIn PDF document text
- http://hftyby.com/upload_fck/file/2021-8-25/20210825193719135997.pdfIn PDF document text
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/619743d723934dc8dfea0fb7af87b84b/62987527978.pdfIn PDF document text
- http://cpgny.com/userfiles/files/61759265694.pdfIn PDF document text
- http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/ef9fdb39f9731c82a80abc9ce0bd0c98/88114247228.pdfIn PDF document text
- http://xy-interior.com/uploads/files/202108312043242219.pdfIn PDF document text
- http://ibrahimalsada.com/pics/file/dozilarenakamuwipuxef.pdfIn PDF document text
- http://ressourcengarten.de/azubi/userfiles/files/rejadoj.pdfIn PDF document text
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ce887f42d---nuzitisadatijati.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_off0000c1ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1ED | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000da04.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA04 | 11284 bytes |
SHA-256: a1facd4cb77979e8c7b3de39e3a5cedd939e5ba57aeea2fae34cc7970ee25d25 |
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font_02_sfnt_off0000f420.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF420 | 16488 bytes |
SHA-256: 6b2adefa255cdf539da92c3876fa5a90d50839400d69585b8634aa29cd7d7a4f |
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