MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many pointing to compromised CMS upload storage or disposable hosting, forming a link farm. The primary purpose appears to be redirecting users through a series of links, likely to a phishing or malware distribution site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
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 http://dsfly.com/uploads/files/32083045731.pdf In PDF document text
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16133c8c593c07---tefoxe.pdfIn PDF document text
- http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/waxazili.pdfIn PDF document text
- https://vinatech.com/userfiles/file/xudasokitila.pdfIn PDF document text
- http://noithatsah.com/webroot/img/files/fawef.pdfIn PDF document text
- http://ottomaniantextile.com/userfiles/file/19745985738.pdfIn PDF document text
- http://slovoveri.org/userfiles/demupegafa.pdfIn PDF document text
- https://siangyun.com/upfiles/editor/files/xixutudi.pdfIn PDF document text
- http://atsolution.org/userfiles/file/20210909072153683758545.pdfIn PDF document text
- https://cardion.dk/gfx/fckimages/file/960203265.pdfIn PDF document text
- https://adesso-moosburg.de/images/file/sovegesisatinux.pdfIn PDF document text
- https://livbiopharma.com/userfiles/file/5757195219.pdfIn PDF document text
- http://goddesshair.net/upload/users/files/86660551169.pdfIn PDF document text
- https://aodaixuan.vn/app/webroot/upload/image/files/fenerozisozof.pdfIn PDF document text
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9367e106f---nimarujojiradaxed.pdfIn PDF document text
- http://smenergy.kr/uploaded/file/14533681986131f3b54e2ef.pdfIn PDF document text
- http://familiehollander.nl/images/uploadedimages/file/64023437792.pdfIn PDF document text
- http://thaimassageboy.com/ckfinder/userfiles/files/metowudi.pdfIn PDF document text
- http://aliceinformaticasrl.com/user/pages/wamopenonemeko.pdfIn PDF document text
- http://skkouty.cz/ckfinder/userfiles/files/11531958913.pdfIn PDF document text
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/8d711b648ad1d4401515eb084faeaecc/sudazofepepidaxapujixuxa.pdfIn PDF document text
- http://ordinate-ltd.com/file_media/file_image/file/povabozatetu.pdfIn PDF document text
- https://home-consult.lu/userfiles/files/josirolov.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=edit+dns+androidPDF 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_off0000ce83.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE83 | 17900 bytes |
SHA-256: 52d4a7140b929f8dbf228f0c8fb494e8dac01ec609ea6d804f2e748b796fd7fc |
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font_01_sfnt_off0000fca4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFCA4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000114bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114BB | 10044 bytes |
SHA-256: 2382f14a3d13be0060369a565f3525e15386c316ab7ad6d43f11181efc8ef539 |
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