MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://synerhu.ru/uplcv?utm_term=13777x+movie+download PDF link annotation
- http://przyrodnik-kujawy.eu/userfiles/file/89993744815.pdfIn PDF document text
- http://traktorpulling.de/ablage/userfiles/files/jabevipusuratim.pdfIn PDF document text
- http://gartenmessebau.de/uploads/files/nogopolimusibutakumesoxo.pdfIn PDF document text
- https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/28783216623.pdfIn PDF document text
- https://zapcdn.space/web/img/podborky/files/werakokofufemodukasanot.pdfIn PDF document text
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16138fac1196c9---82202455304.pdfIn PDF document text
- http://w-mill.jp/images/file/15355965899.pdfIn PDF document text
- http://suamayin.biz/userfiles/file/2594750946.pdfIn PDF document text
- http://crisismobile.com/ckfinder/userfiles/files/forotubabovidil.pdfIn PDF document text
- http://oasishs.com/uploads/files/20210907_034523.pdfIn PDF document text
- http://tsuiteru66.com/userfiles/file/86896037911.pdfIn PDF document text
- http://satunatc.ac.th/ckfinder/userfiles/files/89762467577.pdfIn PDF document text
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fdca9934f6---lubowok.pdfIn PDF document text
- http://midoriku.zaitakunet.jp/app/webroot/upload_images/files/mepupodexex.pdfIn PDF document text
- http://mcutech.net/upload/2021/09/file/1631119833693848996.pdfIn PDF document text
- https://kuepancong.com/contents/files/8036625406.pdfIn PDF document text
- http://jubileejec.com/userfiles/files/tikopanaxisug.pdfIn PDF document text
- http://snft.ro/media/file/zewibilaban.pdfIn PDF document text
- http://smirna.pl/files/file/waxejamixegiseze.pdfIn PDF document text
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/fmkor032hinug2arunmmu31ab0/pevekivapijodugemawajetod.pdfIn PDF document text
- http://aucoindeshalles.fr/menu/file/soxudosu.pdfIn PDF document text
- http://obchodsezlatem.cz/upload/files/vafalusagofonojobet.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_off0001179c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1179C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00012fb3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FB3 | 10476 bytes |
SHA-256: 7723691544a6b388a80f1392563379b716409421ad93c843f68bda442349b0ad |
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font_02_sfnt_off0001478b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1478B | 17460 bytes |
SHA-256: 803c5613c770118e8e2af0cd3c74a6eb4f8c6bb7f3a5c8e4bbed36712ec5379a |
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