MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate the PDF acts as a link farm, directing users to multiple external URLs, some hosted on compromised CMS uploads. The presence of numerous unknown URLs suggests a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://nyirfa.hu/uploads/files/tamabumexidobunesi.pdf In PDF document text
- https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/4b78627f3c67dbcde821ff7acc805e09/75000888310.pdfIn PDF document text
- http://rotarybrescello.it/userfiles/files/57383375742.pdfIn PDF document text
- http://dkyangmei.com/uploadfile/file/2021090618282873499.pdfIn PDF document text
- http://sanraimundo.cl/dyn/uploads/file/gejabadureloxirubudaxufu.pdfIn PDF document text
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16134fea0f392d---ramevekubarolalorenaru.pdfIn PDF document text
- http://qianxi.cn/filespath/files/20210905062952.pdfIn PDF document text
- http://elcolono.net/userfiles/files/63635429714.pdfIn PDF document text
- https://edusfera.pl/upload/file/godiwolig.pdfIn PDF document text
- http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134d116e6255---1576846388.pdfIn PDF document text
- http://aranysolyomfeszke.hu/editor_up/zalixilusijali.pdfIn PDF document text
- https://detectagsafety.com/ckfinder/userfiles/files/tuworudi.pdfIn PDF document text
- https://jeevadhara.org/work/london/userfiles/file/dorudenukinelenuxejo.pdfIn PDF document text
- http://ekbdrive.ru/ckfinder/userfiles/files/71485603714.pdfIn PDF document text
- https://tumsad.org/img/editor/image/file/gipok.pdfIn PDF document text
- http://fluitec.fr/ressource/site-image/files/tidara.pdfIn PDF document text
- https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/aba3634c062dd6b76a4d57a2ae54957d/28643499048.pdfIn PDF document text
- https://evermoral.hk/upload/file/1630985188.pdfIn PDF document text
- http://ateliergermain.club/sites/default/files/file/34250403549.pdfIn PDF document text
- https://valerart.com/ckfinder/userfiles/files/16894439333.pdfIn PDF document text
- https://ijacr.net/assets_admin/ckfinder/core/connector/php/uploads/files/41523683717.pdfIn PDF document text
- https://cosonnguyenthanh.vn/webroot/userfiles/files/32470553882.pdfIn PDF document text
- http://chinhsuasolieu.com/media/files/80475309118.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=cedia+2019+exhibitor+manualPDF 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_off0000bf49.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF49 | 17484 bytes |
SHA-256: 84b49003fbb8a651e2b7fce6040961e266cc80d676bbb702008cf06890646626 |
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font_01_sfnt_off0000ec12.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC12 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010429.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10429 | 11180 bytes |
SHA-256: b05ac6962c7d9458fd0fea715117f70b0367f7d10cf9c146f968c37492af0d2b |
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