MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links, many pointing to disposable hosting and compromised CMS uploads, suggesting a link farm designed to distribute malicious files. The presence of a 'password-protected archive' lure further indicates an attempt to conceal a payload from security gateways. ClamAV detection and ML classification confirm the malicious nature of the document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 8
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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 http://bjsddesign.com/filespath/files/20210912051050.pdf
- https://ceccarmaramures.ro/userfiles/file/28275613441.pdf
- http://rentbucharest.net/images/userfiles/worovuxinowefakujatisaxef.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fb3cf80c0b---98622085415.pdf
- http://kalkulacka-hypo.cz/userfiles/files/94960588652.pdf
- https://fnb-concepts.com/images/uploads/files/71779723065.pdf
- http://ordineveterinarivenezia.eu/userfiles/files/24141314803.pdf
- http://actlogistic.vn/upload/editor/files/97864239432.pdf
- http://xageunion.com/userfiles/file/tewuve.pdf
- https://demircanticaret.com/userfiles/file/gesusisuworeg.pdf
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/13a3ed3e666af22f1f70cb9f7179f316/69073226511.pdf
- https://hizlipin.com/calisma2/files/uploads/93721254621.pdf
- https://muratay.nl/userfiles/file/kugefi.pdf
- http://chaukitchen.com/uploads/files/96358132470.pdf
- http://ledspectrumthai.com/ckfinder/userfiles/files/56501514656.pdf
- http://pmrs.ps/userfiles/file/putonab.pdf
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/1d5e511b96092bc16e03a1c0fd49b1ba/ligigokedakobolinekipu.pdf
- https://theptaynam.vn/upload/files/doburupepi.pdf
- https://euchebnici.com/img/file/18024771784.pdf
- https://pasationtravellers.com/root/FCKeditor/file/863065436.pdf
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/161394fef90bd3---2639718682.pdf
- http://bonaparte-kerkrade.nl/fckeditor/ckfinder/userfiles/file/42807718357.pdf
- http://ambvetfanini.eu/userfiles/files/talezisawojinibaxirolawe.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=gta+5+android+apk+data+highly+compressed
- 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_off0000f7ec.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7EC | 16792 bytes |
font_01_sfnt_off00011003.binf17dc26277278fa1436161402fa0e2c84dbcd96e13e36963014e01514fb33d11 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11003 | 11340 bytes |
font_02_sfnt_off00012a65.binb1bf78d0c6cdb4cfc6befe52d42a1947cba6604779419281438c48fccd387260 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A65 | 18512 bytes |
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